Sherman Alexie actually found his mother's name written in his high school geometry textbook – just like Arnold Spirit, Jr. (source).
Sherman Alexie is not just a novelist; he's also a talented filmmaker. Check out his movies here.
The same year that Alexie published The Absolutely True Diary of a Part-Time Indian, he also published another novel about a teenager. Written for adults, the book is called Flight. Have a peek here.