Sylvain

Sylvie, a feminine derivative is quite common and popular in Europe, and even more so in [French speaking] Africa. Sylvia and Sylvana would thus be the English versions. I once met a Sylvinie in Switzerland, but can’t tell if she was so christened, or [self-]nicknamed. Sylvie Vartan (1st wife of the late French superstar singer Johnny Halliday) is a very famous 60’s – 70’s French singer (still alive as of current Jan 2019). I was told that the name Sheila (an Irish, Welch, Scottish, or Scandinavian version?) was derived from Sylvain; but I couldn’t verify….