Willoughby was born on June 16th, 1739. Willoughby's father was Willoughby Bertie and his mother was Anna Maria Collins. His paternal grandparents were James Bertie and Elizabeth Willoughby. He had a sister named Jane. He was the younger of the two children. He died at the age of 60 on September 26th, 1799.
General Notes
SOURCES: "Descendants of Margaret de Audley" and "Ancestors/Descendants of Maud Grey" http://www.geneastar.org