I didn't name any of my kids after characters from novels . . . . but it didn't occur to me back then. (My oldest child is 19 and the youngest is 13). However, my oldest daughter's name was inspired by Mel Harris, from my favorite show at the time, thirtysomething. I read in a magazine article that her daughter's name was Madeline, and I thought it was beautiful and old-fashioned. My son was named after his grandfather and great-grandfather, and my youngest was named after a favorite movie star, Olivia de Havilland.
Don't have kids, but If I did, there's lots of characters I'd think about naming them after - Tess (Tess of the D'Urbervilles) - Elionwy (Prydain Chronicles) - Kirk (startrek) not because I admire Capt. Kirk so much, although he's seriously awesome, but because I think Kirk is such a strong sounding name.
Also, I had a dog I called Fenrir (from Norse Mythology) and a couple hamsters I called Lucy and Susan (from "The Chronicles of Narnia")