Indentures were signed by him in 1752 as the son of Thomas Clements, a carpenter from Brentford, to be the apprentice of Henry Taylor, Citizen and Goldsmith.
He married Elizabeth Moore in 1765 at St Sepulchre, Holborn. She was a spinster from St Mary, Aldermanbury.
Also in 1765 as a watch case maker from Aldermanbury he paid duties for the Apprentice Indentures of Caleb Lorrod.
Also in 1765 a maker’s mark was entered by him as a case maker from Aldermanbury and another in March 1770 as a case maker from 3 Little Britain.
The burial of a Robert Clements recorded at St Gregory by St Paul in July 1770 may be relevant.
At a later unrecorded date his wife Elizabeth signed for another maker’s mark for him from 18 Flett Lane and could relate to items assayed after his death.