[5][6] His paternal grandparents were John and Sarah Chubb of St Pancras, Soper Lane, London.
[8] In 1882, his father elder brother, Percy, opened a marine underwriting business in the seaport district of New York City.
[10] Chubb also founded, and was serving as chairman emeritus, of Federal Insurance Company, which had assets of more than $220,000,000, at the time of his death.
[8] In 1936, he endowed the Chubb Fellowship at Yale for "…the encouragement and aid of students interested in government and public affairs.
"[12] On June 6, 1898, Chubb was married to Alice Margaret Lee (1874–1955)[13] at Grace Episcopal Church in Orange, New Jersey.
[22] Chubb died on September 3, 1960 at his summer home on Mishaum Point in South Dartmouth, Massachusetts.