Wilbur was among the top 1,000 for boys in the United States from the 1880s to the 1970s, with its peak of popularity being in 1910 (96th position). I don't really like this name, to be honest, and I cannot see it making a comeback any time soon. It looks like E. B. White was right to give this name to the pig (in its literal meaning) in his novel Charlotte's Web, which may have contributed to its unpopularity in recent decades.
Wilbur is the title character in William Joyce's book, "A Day with Wilbur Robinson;" the book upon which the Disney film "Meet the Robinsons" is based.
To me this name sounds country and goosish. It also reminds me of a simple old guy - not that I have anything against old guys. If we're fortunate we'll all live to a ripe old age. It just sounds so dated. I can't believe it was in the top 1,000 in the 70's. Well, differences are what add variety and spice to the world, so if you like this name ok.