Name
- Grassulini, Thomeo, of Pisa, canon and clergyman, fl 14931
- Gregory IX, Pope, before 1170-12411
- Gualterus, Cornelius, of Ghent, historian, fl 16th century1
- Guarini, Giovanni Battista, poet, playwright and diplomat, 1538-16121
- Harsdorffer, Georg Philip1
- Heriman of Cluny, Monk of Cluny1
- Hermann of Reichenau, also known as Hermannus Contractus, 1013-1054, http://isni.org/isni/000000... http://viaf.org/viaf/518791861
- Hernant1
- Hettinger, Johann Franz, Ambassador from the Elector of Mayence1
- Hildebert of Lavardin, Bishop of Le Mans, Archbishop of Tours, c 1056-1133/4, http://isni.org/isni/000000... http://viaf.org/viaf/2820350321
- Hilduinus, Abbat of S Denis, in France1
- Honestis, Christophorus Georgius, Florentinus1
- Hrabanus Maurus, Archbishop of Mainz, c 780-856, http://isni.org/isni/000000... http://viaf.org/viaf/951475341
- Hérisson, Charles Claude François, bibliographer1
- Ignatius, Saint, Bishop of Antioch1
- Inghirami di Volterra, Tomaso, Librarian of the Vatican1
- Innocent X, Pope1
- Inquisition1
- Isabelle, Duchess of Burgundy1
- Ivo, Episcopus Carnotensis1