List of Famous people with last name I

Philip I, commonly known as Philip of Alsace, was count of Flanders from 1168 to 1191. During his rule Flanders prospered economically. He took part in two crusades and died of disease in the Holy Land.

Ahhotep I was an ancient Egyptian queen who lived circa 1560–1530 BC, during the end of the Seventeenth Dynasty of Egypt. She was the daughter of Queen Tetisheri and Senakhtenre Ahmose, and was probably the sister, as well as the queen consort, of Pharaoh Seqenenre Tao ll. Ahhotep I had a long and influential life. She ruled as regent for her son Ahmose I for a time.

Nefertkau I was a 4th Dynasty princess of ancient Egypt. She was the eldest daughter of King Sneferu and hence a half-sister to King Khufu. She was the mother of Nefermaat II and the grandmother of Sneferukhaf.

John I, Lord of Mecklenburg, nicknamed the Theologian was Lord of Mecklenburg from 1234 until his death.

Bretislav I, known as the "Bohemian Achilles", of the Přemyslid dynasty, was Duke of Bohemia from 1035 until his death.

Welf I was Duke of Bavaria from 1070 to 1077 and from 1096 to his death. He was the first member of the Welf branch of the House of Este. In the genealogy of the Elder House of Welf he is counted as Welf IV.

Charles of Blois-Châtillon "the Saint", was the legalist Duke of Brittany from 1341 to his death via his marriage to Joan of Penthiève, holding the title against the claims of John of Montfort. The cause of his possible canonization was the subject of a good deal political maneuvering on the part of his cousin, Charles V of France who endorsed it, and his rival, Montfort, who opposed it. The cause fell dormant after Pope Gregory XI left Avignon in 1376, but was revived in 1894. Charles of Blois was beatified in 1904.

Peter I or Peter Frederick Louis of Holstein-Gottorp was the Regent of the Duchy of Oldenburg for his incapacitated cousin William I from 1785 to 1823, and then served himself as Duke from 1823 to 1829.

Johannes Enschedé was a Dutch printer, owner of Royal Joh. Enschedé and collector.