- one of the 12 paladins of Charlemagne.
- U.S. cornet player, bandleader, and composer: pioneer in jazz.
- a male given name.
- one of Charlemagne's 12 paladins
- Isaac. ?1556–1617, English portrait miniaturist, born in France: he studied under Hilliard and worked at James I's court
- Jamie (Trevor). born 1975, British chef and presenter of television cookery programmes
- Joseph, known as King Oliver. 1885–1938, US pioneer jazz cornetist
