| Iaroslav |
| S-00002221 | FND - Agatha 'The Greek' | ||
| Ibelin |
| S-00000910 | CAS - Double County of Jaffa and Ascalon | ||
| S-00002502 | COA - Thirteenth Century Montforts and Their Arms | ||
| S-00000906 | CRA - Jérusalem et Antioche au temps de Baudouin II | ||
| S-00000898 | Early Ibelins and Ramlas | ||
| S-00000832 | EHR - Ibelin Counts of Jaffa | ||
| S-00002665 | Feudal Nobility of the Crusader Kingdom of Jerusalem | ||
| S-00000177 | GMG - Lusignan Kings of Cyprus | ||
| S-00000180 | GMG - Lusignan Kings of Cyprus (2) | ||
| S-00000900 | HJB - Die Legitimität Balduins IV von Jerusalem | ||
| S-00000937 | LMA - Premiers Ibelins | ||
| S-00000905 | MAP - Ibelin Versus Ibelin: Struggle for the Regency of Jerulalem | ||
| S-00000907 | MAP - John of Jaffa, his Opponents and his Fiefs | ||
| S-00002515 | TGC - Jacques de Lusignan, Count of Tripoli | ||
| Iberia |
| S-00000977 | MRO - Bagratids of Iberia from the 8th to the 11th century | ||
| S-00000972 | TSH - Chronology of the Early Kings of Iberia | ||
| S-00000975 | TSH - Medieval Georgian Historical Literature | ||
| Ibn Battuta |
| S-00002750 | NQU - Travels of Ibn Battuta (Review) | ||
| Iceland |
| S-00002253 | ANS - Eleventh-Century Missions | ||
| Ida |
| S-00002550 | ANS - Ingelric, Count Eustace and St Martin-le-Grand | ||
| Ifield |
| S-00001689 | TPG - Some Account of the Manor of Apuldrefield | ||
| Ightham Mote |
| S-00000091 | GMG - Ightham Mote, Kent | ||
| Ilberd |
| S-00001375 | TAN - Heraldic Glass from Lytes Cary | ||
| Ilbert |
| S-00002292 | ANS - Sheriffs, Lord-Seeking and the Norman Settlement | ||
| Ilchester |
| S-00001937 | MPR - Richard of Ilchester's Inheritance | ||
| Ildebrando |
| S-00000940 | AMP - Maximilla et Mathilda Reginae | ||
| S-00001004 | CEF - Structures Familiales en Lombardie, Émilie et Toscane | ||
| illegitimacy |
| S-00002223 | FND - Illegitimacy of Edward IV | ||
| S-00002224 | FND - Joan of England | ||
| S-00001390 | FND - Sybilla, Queen of Scotland | ||
| S-00002418 | HSJ - Forgotten Family in Twelfth-Century England | ||
| S-00002821 | NEH - Royal Bye-Blows | ||
| Illingworth |
| S-00002771 | NQU - Boughton of Warwickshire | ||
| Imagina |
| S-00000927 | GRT - Imagina und die Grafen von Loon | ||
| Imberti |
| S-00002005 | MPR - Prostitution in Medieval Montpellier | ||
| Immed |
| S-00002507 | Wicman II, Comte du Hamaland | ||
| immigrant |
| S-00002823 | NEH - Immigrants to New England | ||
| Imola |
| S-00002478 | TDT - Chief of the Order in St John Heraldry | ||
| imperialism |
| S-00002672 | COA - Genealogical Imperialism | ||
| in caritate |
| S-00002798 | HSJ - Countergift in Caritate | ||
| incumbent |
| S-00002234 | ANS - Towards Admission and Institution | ||
| Ine |
| S-00002792 | HSJ - Legal Status of the Native Britons | ||
| Inge |
| S-00000091 | GMG - Ightham Mote, Kent | ||
| Ingelric |
| S-00002550 | ANS - Ingelric, Count Eustace and St Martin-le-Grand | ||
| Ingelsant |
| S-00001628 | GMG - Identification of some Yorkshire Filial Names | ||
| Ingild |
| S-00000956 | PBA - Anglo-Saxon Royal Genealogies | ||
| Ingleby |
| S-00002365 | TGB - Dugdale's Visitation of Yorkshire | ||
| Ingoe |
| S-00001357 | GMG - Parentage of Sir Malcolm de Ingoe | ||
| Ingoldesby |
| S-00002853 | TGB - Pedigree of Ingoldsby | ||
| Ingoldesthorp |
| S-00000850 | EYL - de la Poles of Hull | ||
| inheritance |
| S-00001343 | TSG - Pictish Law of Inheritance | ||
| Innermeath |
| S-00002469 | TDT - Letter of Alexander Nisbet | ||
| Innocent III |
| S-00002749 | NQU - Sicilian Vespers (Review) | ||
| inquest |
| S-00002123 | ANS - No Register of Title | ||
| S-00002257 | ANS - Oral Testimony and the Domesday Inquest | ||
| Inquisitions |
| S-00002048 | OFH - Bibliography for Oxon, Berks and Bucks | ||
| Inquisitions Post Mortem |
| S-00001608 | TPG - Minutes from the IPMs Relating to Middlesex | ||
| Insula |
| S-00001244 | PRS - Descent of Belvoir | ||
| Internet |
| S-00001204 | FND - Some Internet Resources for Medieval Genealogy | ||
| S-00002222 | FND - Some Internet Resources for Medieval Genealogy (4) | ||
| S-00002248 | FND - Some Internet Resources for Medieval Genealogy (5) | ||
| S-00002706 | FND - Some Internet Resources for Medieval Genealogy (6) | ||
| S-00002709 | FND - Some Internet Resources for Medieval Genealogy (7) | ||
| interpreter |
| S-00002275 | ANS - Domesday Interpreters | ||
| Inuentio |
| S-00002169 | ANS - Historiography and Hagiography at Saint-Wandrille | ||
| Inverkeithing |
| S-00002391 | TDT - Font at St Peter's Church , Inverkeithing | ||
| Inverness |
| S-00002494 | TDT - Arms of Inverness | ||
| Inverquharity |
| S-00001337 | TSG - Ogilvy of Inverquharity | ||
| S-00001312 | TSG - Sir John Ogilvy | ||
| investiture |
| S-00002137 | ANS - St Anselm on Lay Investiture | ||
| Ireland |
| S-00002530 | ANS - Ballyloughan, Ballymoon and Clonmore | ||
| S-00002325 | ANS - Campaign in Ireland | ||
| S-00002326 | ANS - Ella Armitage and Irish Archaeology | ||
| S-00002162 | ANS - Great Towers of Early Irish Castles | ||
| S-00002327 | ANS - Ireland's Hastings | ||
| S-00002328 | ANS - Justiciarship in Brittany and Ireland | ||
| S-00002329 | ANS - Strategies of Lordship in Leinster | ||
| S-00000061 | Complete Peerage (1st Edition) | ||
| S-00000062 | Complete Peerage (1st Edition): Shaw's Notes | ||
| S-00000034 | Complete Peerage (2nd Edition) | ||
| S-00000172 | Dictionary of Surnames | ||
| S-00000059 | EHR - Calendar of Gormanston Register (Review) | ||
| S-00000128 | GMG - Alleged Descent of the Marshalls | ||
| S-00000131 | GMG - Alleged Descent of the Marshalls (2) | ||
| S-00000132 | GMG - Alleged Descent of the Marshalls (3) | ||
| S-00000307 | GMG - Blacker of Yorkshire and Ulster (Book Review) | ||
| S-00000306 | GMG - Calendar of Archbishop Alen's Register (Book Review) | ||
| S-00000162 | GMG - Calendar of Ormond Deeds (Book Review) | ||
| S-00000194 | GMG - Calendar of Ormond Deeds Vol. III (Book Review) | ||
| S-00000213 | GMG - Colet's Inn at Dublin | ||
| S-00000133 | GMG - Isabel de Clare, Wife of William Marshall | ||
| S-00000255 | GMG - Moonshine from Burke | ||
| S-00000203 | GMG - Oldest Earldoms and their Representatives | ||
| S-00000078 | GMG - Origin of the Fitzmaurices | ||
| S-00000204 | GMG - Papal Marriage Dispensations | ||
| S-00000199 | GMG - Pedigree of the Stewarts of Ballylawn | ||
| S-00000202 | GMG - Records in an Anglo-Irish Family | ||
| S-00002276 | HSJ - Painter's King John - Forty Years On | ||
| S-00001230 | Ireland under the Normans, 1169-1216 | ||
| S-00001231 | Ireland under the Normans, 1216-1333 | ||
| S-00002748 | NQU - Walter Bellengier, Ireland King of Arms | ||
| S-00002096 | Oxford Dictionary of National Biography | ||
| S-00000247 | PEG - Onomastique et Parenté - Names within Names | ||
| S-00002393 | TDT - Heraldry in Ireland | ||
| S-00000060 | TGB - Barons of the Naas | ||
| S-00000018 | TGC - Eve of Leinster | ||
| S-00000025 | TGC - Eve of Leinster (Letter from CFH Evans) | ||
| S-00000207 | TIM - Segrave Family (Book Review) | ||
| S-00001671 | TPG - Account of the Present State of Youghal Church | ||
| S-00001692 | TPG - Chartć Tyrryanć | ||
| S-00001693 | TPG - Exactions Incident to Tenures in Ireland | ||
| S-00001133 | TSG - Notes on the Macneils of Barra | ||
| Irene |
| S-00000942 | EMN - Ladies of the Mongols | ||
| Irish |
| S-00002003 | MPR - Prosopography of Irish Scholars | ||
| Irish literature |
| S-00002332 | ANS - Impact of the Norman Invasion on Irish Literature | ||
| Irving |
| S-00001154 | TSG - Celebrated Americans and an Ancient Scottish Clan | ||
| S-00001150 | TSG - Irving Pedigree | ||
| S-00001168 | TSG - Irvings of Bonshaw | ||
| Isaac |
| S-00000970 | TSH - Caucasia and Byzantine Studies | ||
| S-00002670 | Walter Goodwin Davis | ||
| Isaac II |
| S-00000948 | Entorno Familiar de Alfonso X | ||
| Isabel |
| S-00002572 | HSJ - Hidden History of the Twelfth Century | ||
| Isabel de Beaumont |
| S-00002235 | FND - First English Duchess: Isabel de Beaumont | ||
| Isabel of Gloucester |
| S-00002360 | HSJ - Bristol: An Angevin Baronial Capital under Royal Siege | ||
| Isabella |
| S-00001014 | PAS - Discendenza degli Svevi di Sicilia in Europa | ||
| S-00001016 | VAI - Staufisch-sizilische Tochterstämme in Europa | ||
| Isabelle |
| S-00002850 | TGB - Calendarium Genealogicum | ||
| Iselham |
| S-00002622 | TAN - History and Family History | ||
| Isidore |
| S-00002708 | FND - Medieval Iberian Historiography | ||
| Islam |
| S-00002708 | FND - Medieval Iberian Historiography | ||
| S-00001862 | MPR - Analysis of Biographical Texts From Ibn Harith | ||
| S-00001938 | MPR - Astrologers of 'Abd Al-Rahman II | ||
| S-00001869 | MPR - Prosopography in Islam: An Essay of Classification | ||
| Islamic |
| S-00001978 | MPR - Andalusi Scholars and Their Travels to the Islamic East | ||
| S-00001849 | MPR - Biography and Prosopography in Arab-Islamic Medieval Culture | ||
| S-00001993 | MPR - Stonemasons' Identification Marks | ||
| S-00001981 | MPR - Women's Names in Early Islamic Pro-Shi'ite Texts | ||
| Islay |
| S-00001141 | TSG - Last Macdonalds of Islay | ||
| Isle of Man |
| S-00001023 | Manx Royal Family and their Scandinavian Descendants | ||
| S-00001326 | TSG - Charter of Uchtred | ||
| Isle of Wight |
| S-00002529 | ANS - Dynamics of Lordship and Landscape | ||
| S-00001592 | ANS - House of Redvers and its Monastic Foundations | ||
| Isley |
| S-00001620 | TPG - De Fremingham, Isley, and Pimpe | ||
| S-00001689 | TPG - Some Account of the Manor of Apuldrefield | ||
| István |
| S-00000995 | SEZ - Géza Nagyfejedelem és Családja | ||
| Italy |
| S-00002066 | Abruzzes médiévales | ||
| S-00002242 | ANS - Anselm in Italy, 1097-1100 | ||
| S-00002204 | ANS - Nobilta e Parentela nell'Italia Normanna | ||
| S-00002200 | ANS - Norman-Italian Adventurer in the East | ||
| S-00002203 | ANS - Simon Magus in South Italy | ||
| S-00000667 | Ducato di Napoli e Principato di Salerno | ||
| S-00000806 | Genealogy in Italy | ||
| S-00000188 | GMG - Ancestry of William I | ||
| S-00000319 | GMG - New England Family of Coe | ||
| S-00002383 | HSJ - Angevin Italy: the Sicilian Vespers | ||
| S-00002558 | HSJ - Churches and Churchmen in an Age of Conquest | ||
| S-00001371 | Italy and her Invaders | ||
| S-00002578 | Markgrafen und Markgrafschaften | ||
| S-00001941 | MPR - Career, Springboard, or Sinecure? | ||
| S-00001966 | MPR - Eleventh-Century Noble Family from Central Italy | ||
| S-00002017 | MPR - Gender and Naming in Medieval Southem Italy | ||
| S-00001897 | MPR - Parrains et Filleuls | ||
| S-00001859 | MPR - Review of Lombard Prosopography | ||
| S-00000889 | Register zu Pompeo Litta | ||
| Ithier |
| S-00000236 | PEG - Onomastique et Parenté - Abbon, Dalmas, Ithier et les Autres | ||
| Ivo |
| S-00002191 | ANS - Adela of Blois and Ivo of Chartres | ||
| S-00002171 | ANS - Ivo of Chartres and the Anglo-Norman Cultural Tradition | ||
| S-00000857 | FWG - Les comtes du Maine c. 940-1050 | ||
| Iwardeby |
| S-00002840 | SAC - Fitznells Cartulary (Book Review) | ||
| Iwerne |
| S-00002116 | ANS - Knights of Shaftesbury Abbey | ||