T.P. is a son of Dilsey Gibson and Roskus Gibson, and a servant to the Compson family. He is Benjy's caretaker and playmate during Benjy's adolescence. He is 18 years old while he takes care of Benjy (10), and the Compson Appendix says that he moved to Memphis after the events of The Sound and the Fury.
The Sound and the Fury
“That Evening Sun”
Glicksberg, Charles I. “William Faulkner and the Negro Problem.” Phylon (1940-1956) 10.2 (1949): 153-160.
Minnick, Lisa. “Representations of Speech and Attitudes about Race in The Sound and the Fury.” Dialect and Dichotomy: Literary Representations of African American Speech. Tuscaloosa: The University of Alabama Press, 2004.