Gilbert Stuart, Rembrandt Peale, Charles Willson Peale
The Peale Family. Don't feel bad. It took me a while to find it, too.
Govert Flinck , Ferdinand Bol.
Francisco Goya
The best portrait of Oliver Cromwell was painted by Samuel Cooper. However, he was born in England. So I suppose the painter you want is Sir Peter Lely. After the restoration he was Court painter to...