London diamond merchant.
Rented and lent jewels to English royal family for special occasions, such as coronation of George II. Resided at Isleworth House in Richmond; neighbor and friend of Horace Walpole. Member of Grand Ohio Company (1769).
Son of Abraham and Abigail (Hart) Franks of London. Married his cousin Bilhah Hart; three children. Uncle of Moses and Napthali Franks (and father-in-law of Moses).