Thomas Carfrae Jr. was born in Edinburgh, Scotland in 1796. Carfrae was instrumental in establishing the York Mechanics' Institute (1832) which later became the Toronto Public Library. He served for some time as collector of customs for York Harbour. Active in politics, Carfrae was wounded during the Mackenzie Rebellion attack on Montgomery's Tavern in 1837. That same year, he was appointed magistrate. He died in 1841 and was buried in Potter's Field, later being moved to Toronto Necropolis.
Carfrae was a founding director of the Trustees of the York General Burying Grounds (1826), a non-sectarian organization now known as Toronto Trust Cemeteries. Mount Pleasant Cemetery is one of the properties it administers.