He was the son of Charles McCurdy and Catherine McCurdy,
The 1911 Irish Census records the family residing in house 32, Bushmills. Charles is recorded as being a Merchant Tailor. John had 4 brothers and 4 sisters.
McCurdy probably joined the Belfast Banking Company around 1928 and served in Londonderry branch.
He served during WWII.
He is recorded in the 1966 annual accounts of the Belfast Banking Company as being manager of Strabane branch.