When John Anthony Gillis was born on 11 March 1907, in Boston, Suffolk, Massachusetts, United States, his father, Angus S. Gillis, was 37 and his mother, Euphemia Ann MacDonnell, was 34. He lived in Hyde Park, Norfolk, Massachusetts, United States in 1910. He died on 24 November 1964, in Ashburnham, Worcester, Massachusetts, United States, at the age of 57, and was buried in Ashburnham, Worcester, Massachusetts, United States.
Scottish (western) and Irish (Ulster): Anglicized form of Scottish Gaelic Gille Iosa, Irish Giolla Íosa ‘servant of Jesus’, or a shortened form from Mac Gille Íosa or Mac Giolla Íosa ‘son of the servant of Jesus’. Compare McLeish . The usual spelling in Scotland is Gillies .
Flemish, Dutch, and Walloon: from the personal name Gillis, a Flemish equivalent and Walloon variant of French and Walloon Gilles .