Possible Clues:

• British artist William with a 1745 portrait of him and his pug dog
• William —, English painter and cartoonist
• Painter of house and courtyard
• He painted pictures of pig and horse
• A Rake's Progress artist
• Artist's animal painting - horse's head
• William - (A Rake's Progress)
• Satirical 18th century painter
• William -, eighteenth century English engraver
• Artist producing animal paintings, horses primarily