Who married Hendrik Willem Mesdag?

Hendrik Willem Mesdag (23 February 1831 – 10 July 1915) was a Dutch marine painter.

Sina (Sientje) van Houten (23 December 1834 Groningen – 20 March 1909 The Hague) was the wife of Hendrik Willem Mesdag, the Dutch marine painter of the Hague School, and a painter herself.