He may have, but to my knowledge Franklin was mostly interested in the ladies (i.e. getting large numbers of them to have sex with him). But he was an adventurous fellow, I wouldn't be surprised if he saw quite a few penises in his day.

Alexander Hamilton, however, was a very gay founding father. ("I wish, my dear Laurens ... it might be in my power, by action rather than words, [to] convince you that I love you.", etc.). I personally think that he a big thing for Washington, especially as a younger man.