A boy from Africa who travels far distances to meet his one, true love. He may send you the occasional bouquet of flowers or box of fine Kenyan chocolates just so you know that he loves you. Bertrude is adored by all.
Anna: "Oh my goodness, I just got a box of truffles in the mail from my man!"
Anna's Friend: "Why, his name must be Bertrude? Right?"
At an airport:
Girl (talking to stranger): "Yeah, so I'm waiting to pick up my boyfriend. He came to visit me from so far away!"
Stranger: "Gotta love them Bertrudes."