Career
He represented King County in the Legislative Assembly of New Brunswick from 1856 to 1857. He was born in Hillsborough, Albert County,the son of Cornelius McMonagle, a native of Ireland, and Anne Scott. McMonagle later settled in Sussex Corner.
McMonagle raised cows and work horses as well as raising and training pure-bred race horses.
He introduced the Morgan horse to New Brunswick. McMonagle"s horse Livingstone defeated George Gilbert"s Retriever in the so-called "Great race of 1847".
