Sidney Westheimer was the nephew of German-born Mitchell Louis Westheimer, an early Houston entrepreneur. Some of Mitchell Westheimer's nephew operated the Houston Livery Stable, and some operated a funeral home. (The Handbook of Texas.)
"Sid. Westheimer, livery undertaker and embalmer." (1920) Special Collections, University of Houston Libraries: http://hdl.handle.net/1911/37039.
Special Collections, University of Houston Libraries