After graduating from Oxford, Garnett took holy orders in the Church of England, becoming a preacher at Bunbury from 1853–63, and was later a justice of the peace for both Montgomeryshire and Shropshire. He changed his name by royal license to William Bishton Garnett Botfield in 1863, following the death of his cousin Beriah Botfield who had died without issue. Garnett died at Shifnal in January 1903.
