Mia and
Piper: they would never, IMO, have become popular if not for
Mia Farrow and
Piper Laurie. It just took a generation or two before they sounded normal enough to use for characters, and then babies.
Sia
Dustin (Hoffman)
Calista (Flockhart)
Aidan (
Quinn) - at least it was basically unheard-of in the US.
Liam as well, before Neeson.
- mirfak