His earliest American ancestor, John Coolidge, emigrated from Cottenham, Cambridgeshire, England, around 1630 and settled in Watertown, Massachusetts.
Paraardhësi i tij më të hershme amerikan, John Coolidge, emigroi nga Cottenham, Cambridgeshire, Angli, rreth vitit 1630 dhe u vendos në Watertown, Massachusetts.