Johan Graham

According to the RKD (the Netherlands Institute for Art History), he was born in London but lived mostly in the Hague, where he was active at a young age.

[1] He travelled to Rome and returned to London but came back to The Hague and was still living there in 1750.

[1][2] He became a member of the Confrerie Pictura in 1742, and was registered as a pupil of Arnold Houbraken, Jacques Ignatius de Roore and Mattheus Terwesten.

[1] Houbraken died in 1718, so he can't have studied with him very long, and in 1719 he travelled to Italy, visiting Bologna, Venice, and Rome.

[1] In 1775 he sold his collection of 136 paintings and moved to London with his elderly sister.