I am not sure why they chose it. Before I think I told him how we'd wanted to give the boys French names, since DH and I both have French in our family backgrounds. But we could agree on only one name for DS8, and could not agree one one for DS4, so he wound up with a Scottish name.
Anyway, so he asked, "Like what French boy names?" so I rattled off a bunch of the more
unique ones, and Etienne was one of them, I remember. I also mentioned Guy (pronounced with an 'ee' instead if 'i' vowel sound), and Damien (which I really like but reminds me of The Omen.)
I don't know why they chose Etienne, but I think he told her that "my sister chose this name", which wasn't exactly true...
Anyway, he said tonight that the Cambodian-American side of the family has taken to calling him Ethan, WTH???