Tethart Philipp Christian Haag

[3] A remarkable work of Haag is his painting of Wilhelmina of Prussia, Princess of Orange on a horse, which hangs in the Rijksmuseum in Amsterdam.

Contrary to tradition he did not picture her sitting with both legs on one side, but in the male position, which was customary for kings and emperors.

[4] He also made drawings of paintings by famous masters, including The Young Bull by Paulus Potter.

As court painter to Prince William V, Haag also managed the collection of paintings by the governor and was his chief adviser in the foundation in 1774 of a stadtholder 'Picture Gallery' at the Buitenhof in The Hague.

In addition to his work for the governor's court and as an artist, Haag held various posts at cultural institutions in The Hague.