Complex sentence: Throughout his early career Etty was highly regarded by wealthy lawyer Thomas Myers, who had been educated at Eton College and thus had a good knowledge of classical mythology, and who from 1832 onwards regularly wrote to Etty to suggest potential subjects for paintings.
Split into simpler sentences: Throughout his early career Etty was highly regarded by wealthy lawyer Thomas Myers, who had been educated at Eton College and thus had a good knowledge of classical mythology. From 1832 onwards Myers regularly wrote to Etty to suggest potential subjects for paintings.