John Caleff (30 August 1726-23 October 1812) was a Massachusetts surgeon and later United Empire Loyalist. In 1745, he was captured as part of the Siege of Louisbourg. He was a founder of the New Ireland crown colony.[1]
In 1774, a mob formed which demanded that Caleff issue a formal confession for his loyalist actions.[2]
His former home, known now as the Dr. John Calef House, is located in Ipswich, Massachusetts. He moved to Saint Andrews, New Brunswick in 1791 and died there in 1812.[1]