I like this name because it means solemn pledge or promise, and it sounds adventurous yet serious to me. I think it sounds cute for a little boy but would age really well. Gil could be a cute nn.
Gilles Deleuze (18 January 1925 – 4 November 1995) was a French philosopher who, from the early 1960s until his death in 1995, wrote on philosophy, literature, film, and fine art.
The name Gilles is pretty dated to middle-aged men in France. It was very popular from around 1950-1970 and has since become very uncommonly given to baby boys.
"Gilles de Rais (1404–1440) was a Breton knight, a leader in the French army and a companion-in-arms of Joan of Arc. He is best known as a prolific serial killer of children. There is significant controversy over his guilt; some maintain he was framed for political reasons."
I don't really like this name. I think that it appears too much like 'gills' and the poor little boy named this would be teased on the playground. I like the pronunciation, but no one would ever know how to spell it or say it.