Hermann von Bonstetten

“In 1267 appears Hermann von Bonstetten, called von Uster respetively Ustra, in a document; in 1268 certified Ita von Teufen, wife of Johann von Wetzikon, twice on the Uster castle. In one of the two documents, Hermann von Bonstetten is called as a witness.[2] The Bonstetten family held jurisdiction on the court of Nossikon, another locality of the present city of Uster, and partially of Kirchuster. Later, the lords of Bonstetten also acquired legal rights to Wermatswil, another neighbouring locality.”

https://en.m.wikipedia.org/wiki/Uster_Castle