this web site you can check the popularity (in America) of just about any given name. The site has a disclaimer for data prior to 1940.
The chart at right shows the result for my own given name (“Thomas”). You can see that “peak Thomas” (the raw data is downloadable) was in 1952 – the year I was born. I've always assumed that I was named after my dad, but (perhaps coincidentally) my name was also at its peak popularity that year.
I tried about 20 names from my family or Debbie's, and the results were quite a surprise to me. Try some of your own, and if you find something surprising, leave a note to tell us about it!