Stephen Lett (4 April 1847 – 11 October 1905) was born in Ireland but raised and educated in British North American which when he was about 20 became Canada. He became a physician and was the superintendent of an asylum. He was also a well known medical writer.[1][2][3][4] He was one of the founders of the Homewood Asylum in Guelph, Ontario,.[5] and its first medical superintendent.[6]