There have been so many uses of
Clarence in American literature and culture to telegraph "namby-pamby" or "ineffectual" characteristics that it's a bit harder to see it coming back for boys than some of the other Victorian male fashions.
Actually, I think there is a chance that when
Clarence is revived next in the USA that it will switch gender. If
Cadence continues its great popularity as a female name,
Clarence may start to sound like a "cool" name for a girl to some young parents who hear it as a blend of
Clara and
Cadence.