During the War of 1812, he joined the Buffalo Light Artillery Company and tended to the wounded during the first assault on Black Rock and during the burning of the village on December 31, 1813, Trowbridge was one of the last to leave, helping to secure the safety of the women and children.

He was among the many of Buffalo's early pioneers who suffered from the economic collapse of 1836—1837, and from the speculation of Benjamin Rathbun.

During his term, several new positions with the city were created, including superintendent of schools and the office of police justice.

Also during his short term, the Canadian revolutionary movement, or "Patriot War" resulted in so much unrest in the city that it was becoming difficult to keep order.

The council appointed Alderman Pierre A. Barker as mayor pro tem.