Premise: Bailey Gatzert (December 29, 1829 – April 19, 1893) was an American politician and the eighth mayor of Seattle, Washington, serving from 1875 to 1876. He was the first Jewish mayor of Seattle, narrowly missing being the first Jewish mayor of a major American city (Moses Bloom became mayor of Iowa City, Iowa, in 1873), and has been the only Jewish mayor of Seattle to date.
Hypothesis: Bailey Gatzert was a mayor in  January 1876.