My given name was Gerald James, but my parents weren't thinking of saints when they came up with it (my first name is in honor of a friend of my father's who had recently committed suicide after his wife found out he was cheating on her). There are three saints named Gerald that I know of---St. Gerald of Mayo (d. 731), St. Gerald of Aurillac (d. 909), and St. Gerald of Moissac (d. 1109). I don't know much about them and wasn't familiar with them until recently.
When I was confirmed, I wanted to take on the name of Benedict Bede (or Beda Benedictus, in Latin), but was told I could only take one. So I chose St. Bede the Venerable (though I still pray to St. Benedict of Nursia regularly). I had always been interested in Anglo-Saxon England, and Bede, the greatest historian of the Middle Ages, the only English Doctor of the Church, the only Englishman in Dante's Paradiso, always piqued my fascination. Since I grew up loving history and am a budding historian now, I have always had an affinity with him. He was extraordinarily erudite for his time, with works on natural science, including astronomy, dating, history, theology, Biblical exegesis, and some poetry. He, an 8th-century monk in Northumbria, had a knowledge of Greek. The kicker for me was his lifelong devotion to the Benedictine order, a tradition I've always loved.