Yeah, I do agree that "classic" and "in my lifetime" are mutually exclusive . That's my story, and I'm sticking to it! But your answer has got me even more puzzled: the PattiPage and JanisPaige connection could have sparked off a trend - didn't that happen with GraceKelly's surname, at much the same time? - but at the same time there was the pageboy haircut for women that was seen on every street, and therefore much more widely known than these entertainers, and I'd have thought that it would have neutralised the celeb effect (having one's hair cut in a a bob didn't give rise to an epidemic of Roberts and Robertas, and Robyn came too late).
Oh, and in South Africa the Page people outnumber the Paiges quite massively according to the telephone directory! I've never met a ln Paige, and so I assumed that Page had been prettified. Thanks!