Robert
Robert was Number 1 in both 1925 and 1950, and in fact has been in the Top 25 for an entire century, giving it true classic status. Though no longer stylish, Robert is still widely used as a family name.
Nicknames Bob and Bobby are also stuck in the past, while Rob, Robb and Robby/Robbie have an ever so slightly more modern appeal, and indeed antiquated pet forms Dob, Hob, Rab and Rabbie sound fresher.
Robert was the name of three kings of Scotland, including Robert the Bruce, who freed Scotland from English rule.There are countless literary and real life namesakes, from Robert E. Lee to Robert Redford.
Modern parents might consider honoring an ancestral Robert by choosing Robertson or Robinson.

