People

Inhabitant of La Rochelle	A letter to Blanche of Castile, queen of France (1241)
Innocent II, pope	A letter to Heloise, abbess of the Paraclete A letter to Heloise, abbess of the Paraclete (1131) A letter to Heloise, abbess of the Paraclete (1136) A letter to Richinza of Nordheim and Brunswick (1130, May 15.) A letter to Richinza of Nordheim and Brunswick (1133, June 8)
Innocent III	A letter to Marie of Montpellier (1212, June 6)
Innocent III, pope	A letter to Adelheid/Adela of Meissen (1210, April 13) A letter to Alix/Adela of Champagne, queen of France (1204) A letter to Blanche of Navarre, Countess of Champagne (12/13/1201) A letter to Blanche of Navarre, Countess of Champagne (12/18/1201) A letter to Blanche of Navarre, Countess of Champagne (1210) A letter to Blanche of Navarre, Countess of Champagne (1213) A letter to Ingeborg of Denmark, queen of France (1200) A letter to Ingeborg of Denmark, queen of France (1205) A letter to Ingeborg of Denmark, queen of France (1210) A letter to Marie of Montpellier (1213, January 19)	A letter from Ingeborg of Denmark, queen of France (1203)
Innocent IV	A letter to Agnes of Prague (11/13/1243) A letter to Agnes of Prague (11/13/1243) A letter to Clare of Assisi (02/08/1254) A letter to Clare of Assisi (08/10/1253) A letter to Eleanor of Provence (06/11/1254) A letter to Eleanor of Provence (1243) A letter to Eleanor of Provence (1244)
Innocent IV, pope	A letter to Beatrice of Savoy (1245) A letter to Blanche of Castile, queen of France (1251) A letter to Blanche of Castile, queen of France (6/17/1247) A letter to Margaret of Constantinople, Countess of Flanders (1250, July 14) A letter to Salomea of Little Poland (1254, August 3)
Innocent IV, pope
Isarnus of Cessenon	A letter to Cecilia of Provence (c.1130)
Isovard and his wife Sancia	A letter (1062, October 28) A letter to Almodis of La Marche (October 28, 1062)
Istvan III, king of Hungary	A letter to Archbishop Peter of Split (1163) A letter to Public (1169)
Ivo of Chartres	A letter to Adela of England, Countess of Blois (1100-1104) A letter to Adela of England, Countess of Blois (1101-02?) A letter to Adela of England, Countess of Blois (1102-07) A letter to Adela of England, Countess of Blois (1102-1103, May 17) A letter to Adela of England, Countess of Blois (1102-1103, May 17) A letter to Adela of England, Countess of Blois (1103, summer/early autumn) A letter to Adela of England, Countess of Blois (1107, after Easter, April 14) A letter to Adela of England, Countess of Blois (1109?) A letter to Adela of England, Countess of Blois (c.1091)
Ivo, bailiff of Ghent	A letter to Joan of Constantinople, Countess of Flanders (1239, December)
Ivo, bishop of Chartres	A letter to Matilda of Châteaudun (1102?) A letter to Matilda of Scotland, queen of the English (1100's) A letter to Matilda of Scotland, queen of the English (1100's) A letter to Matilda of Scotland, queen of the English (after 1107)
Jacinto, deacon-cardinal		A letter from Eleanor of Aquitaine ()
James Fresel		A letter from Eleanor of Provence (04/13/1254)
Jean de Fécamp	A letter to Agnes of Poitiers, empress
Jerome	A letter to Algasia (late 4th or early 5th century?) A letter to Castorina (374-76) A letter to Demetrias (414) A letter to Eustochium (383-384) A letter to Eustochium (384) A letter to Eustochium (386-392) A letter to Eustochium (386-392) A letter to Eustochium (387-388) A letter to Eustochium (387-388) A letter to Eustochium (387-388) A letter to Eustochium (388) A letter to Eustochium (388?) A letter to Eustochium (389-390) A letter to Eustochium (390-404) A letter to Eustochium (390-404) A letter to Eustochium (391-392) A letter to Eustochium (391-392) A letter to Eustochium (391-392) A letter to Eustochium (391-392) A letter to Eustochium (391-404) A letter to Eustochium (391-404) A letter to Eustochium (391-404) A letter to Eustochium (404) A letter to Eustochium (404 or later) A letter to Eustochium (408-410) A letter to Eustochium (410-414) A letter to Eustochium (?) A letter to Eustochium (c.390) A letter to Fabiola (397) A letter to Fabiola (400) A letter to Furia (394) A letter to Geruchia (409) A letter to Hedybia (late 4th century) A letter to Laeta (403) A letter to Marcella (384) A letter to Marcella (384) A letter to Marcella (384) A letter to Marcella (384-6) A letter to Marcella (384-6) A letter to Marcella (384-6) A letter to Marcella (384?) A letter to Marcella (384?) A letter to Marcella (384?) A letter to Marcella (384?) A letter to Marcella (384?) A letter to Marcella (385) A letter to Marcella (385) A letter to Marcella (385) A letter to Marcella (385) A letter to Marcella (385) A letter to Marcella (388) A letter to Marcella (388) A letter to Marcella (393?) A letter to Marcella (402-04) A letter to Marcella (402?) A letter to Marcella (407) A letter to Marcella (412) A letter to Paula, the elder (384) A letter to Paula, the elder (384) A letter to Paula, the elder (384?) A letter to Paula, the elder (386-392) A letter to Paula, the elder (386-392) A letter to Paula, the elder (387-388) A letter to Paula, the elder (387-388) A letter to Paula, the elder (387-388) A letter to Paula, the elder (388) A letter to Paula, the elder (388?) A letter to Paula, the elder (389-390) A letter to Paula, the elder (390-404) A letter to Paula, the elder (390-404) A letter to Paula, the elder (391-392) A letter to Paula, the elder (391-392) A letter to Paula, the elder (391-392) A letter to Paula, the elder (391-392) A letter to Paula, the elder (391-404) A letter to Paula, the elder (391-404) A letter to Paula, the elder (391-404) A letter to Paula, the elder (?) A letter to Paula, the elder (c.390) A letter to Principia (397) A letter to Principia (412) A letter to Salvina (400) A letter to Theodora Spana (399) A letter to Virgins of Haemon (374-76)	A letter from Hedybia (late 4th century) A letter from Algasia (late 4th or early 5th century?)
John de Lessington, G.de Presont, Geoffrey de Langeley, Robert de Crepping		A letter from Eleanor of Provence (12/05/1253)
John de Lexinton, Geoffrey de Langele, sheriff of Cumberland		A letter from Eleanor of Provence (01/17/1254)
John de Sumercote, Richard de Ewelle		A letter from Eleanor of Provence (04/13/1254)
John Lestrange, Robert de Grendon		A letter from Eleanor of Provence (08/03/1253)
John of Brienne, king of Jerusalem	A letter to Blanche of Navarre, Countess of Champagne (1221, April) A letter to Santio, prior of the Holy Sepulchre (1211)
John of Ghent	A letter to Margaret of Constantinople, Countess of Flanders (1248, August 11)
John of Hoveden	A letter to Eleanor of Provence (1274?)
John of Mantua	A letter to Matilda of Tuscany, countess of Tuscany, duchess of Lorraine A letter to Matilda of Tuscany, countess of Tuscany, duchess of Lorraine