Quicksilver is my cat’s name. I’ve had her longer than he’s been on the boards. Therefore, I think he may have stolen her name.
I was reading Terry Pratchett yesterday, and I noticed–almost in the same breath–Ponder Stibbons and Lobsang (not to mention Susan Sto Helit, who I think is still around), right there on the page.
I love you Dopers. 
Maybe he borrowed in in homage to her.