John was born on January 26th, 1742. John's father was John Montagu and his mother was Dorothy Fane. His paternal grandfather was Edward Richard Montagu and his paternal grandmother is Elizabeth Popham; his maternal grandfather was Charles Fane and his maternal grandmother is Mary Stanhope. He was an only child. He died at the age of 72 on June 6th, 1814.
General Notes
SOURCES: "Ancestors/Descendants of Theophilus Howard" http://www.geneastar.org.