His sister was Eugenia Foley, and his brother John Danehy, who went on to become Middlesex County Commissioner.
A trained pharmacist, Danehy owned and operated Lynch Drugstore on Massachusetts Avenue for four decades.
[1] It had previously been owned and operated by his maternal uncle John D. Lynch, who also served as a Cambridge city councilor and mayor.
[8] He opposed the expansion of the Red Line to Alewife, insisting that it would lead to an increase in crime and traffic in North Cambridge.
[12] In 1968, after a Harvard Crimson article referred to Cambridge city councilor Al Vellucci as a "pain in the ass" and "bastard-saint," Danehy protested and requested a formal apology.