It doesn't seem to be uncommon in
Dutch, with 716 male and 2,527 female bearers in the Netherlands (source:
https://nvb.meertens.knaw.nl/naam/is/Sacha).
Perhaps the page can say that
Sacha is chiefly masculine in French and chiefly feminine in
Dutch, and thus mark it as unisex.
“Dear optimist, pessimist, and realist – while you guys were busy arguing about the glass of wine, I drank it! Sincerely, the opportunist!”
-
Lori Greiner
Rate my PNLs:
https://www.behindthename.com/pnl/215535/145665https://www.behindthename.com/pnl/215535/145666