[1] In England he became known for neoclassical scenes from mythology, often working on decorative schemes in collaboration with Robert Adam, for example at Harewood House and at Kedleston Hall.
In late 1772 Ann White, a servant at the house, gave birth to his illegitimate son, John Biagio Rebecca.
A note in the baptismal register at Saffron Walden describes Rebecca as "a most ingenious artist who was employed by Sir John Griffin, at Audley End, to paint the ceiling & Panels of ye little south drawing Room, & several family portraits in the great Room over the eating Parlor!!!
The second tier is supported by caryatides, winged syrens, gilt; the parapet, Neptune and Amphitrite, attended by sea gods and goddesses.
The room was not only a major addition to the theatre’s amenities, but it involved the development of the Haymarket Street façade and the beginnings of a change in the relationship between the Opera House and the city.