He signed indentures in 1712 as the son of Hester Fox, a widow from Whitechapel, to be the apprentice of Francis Garthorne of the Girdlers Company.
He entered marks at Goldsmiths Hall from 1730-1755 in partnership and alone from an address in St Swithin's Lane.
Christenings of the children of Mordecai and Jane Fox were recorded at St Swithin, London Stone from 1725-35 without detail of an address or their father’s trade.
The 1750 Poll book shows him in the Girdlers Company and a silversmith at Swithin’s Lane.
He was last named in full in the 1760 Land Taxassessment book for St Swithin’s Precinct. The entries for the same property in 1761-3 record simply “Fox”.