|His name is Bond. Saint Bond.|
There's not much to tell about this saint, but I must tell what I know to justify the lame joke above.
A devil tempted him sorely while he prayed. One day, exasperated with the devil's temptations, he seized the little demon by its long ears and dunked it into a stoup of holy water that he kept in the chapel. Then he slapped his breviary down on top of the little fiend's head, effectively trapping the tiny tormentor until the saint released him. The homunculus remained in his watery little prison for a fortnight, suffering his own penance right beside the penitential saint.
And that's about all I know about Saint Bond, but that's about all one should know about the patron of secret agents.