early life and apprenticeship sir james thornhill, a renowned english painter, was born in melcombe regis, dorset, in 1675. he was the son of walter thornhill of wareham and mary, eldest daughter of colonel william sydenham, governor of weymouth. in 1689, thornhill was apprenticed to thomas highmore, a specialist in non-figurative decorative painting. artistic career thornhill's artistic career spanned over four decades, during which h…