Career
He was appointed on 12 March 1740 and was Governor until 8 January 1742. He was succeeded by Daniel Overbeek. Bruijninck was the oldest son of Wilhelmina Verwitt and Peter Bruijninck, voogd (custodian/governor) of Lichtenvoorde for the lord of Bronckhorst and Borculo.
Willem Maurits joined the Dutch East India Company and had risen to opperkoopman ("upper-merchant") before 1735.
From 1735 to 1737 he was Governor of the Sumatran West Coast and commissary of the silver and gold mines of Salida near Padang.
