If you are interested in knowing more about the use of eponyms in anatomy, probably the most complete source on the web is Ole Daniel Enerson's Whonamedit which lists thousands of body parts and conditions named for their discoverers. It even gives you an "eponym of the day", which reminds me of lists of Saints Days in the Catholic tradition.
So, I did what any normal person would do and checked out who shared my birthday!
It turns out that Edward Jenner (of Jennerian vaccination fame) is the best known person, but there is also a woman whose name was given to a condition--Sister Mary Joseph's nodule. Women of course, are not greatly represented in eponymic naming for obvious historical reasons, so it was interesting to read about this one. Enerson actually has a separate list of women who gave their names to things which you can see here.
And just for the record, I share my birthday with St. Matthias who took Judas' place among the apostles.