Jacob P. Yuncker [00022] is listed in the Internal Revenue Service Tax Assessment Rolls for 1863 in Sheldon, Wyoming, New York. The entry is dated May 1, 1865. He was taxed income.

This document proves Jacob lived in New York at least until May 1865, before he moved to Westphalia, Clinton, Michigan, where he married his second wife Anna Margaret (Pohl) Yuncker in January 1866.

Source: Ancestry.com, "U.S. IRS Tax Assessment Lists, 1862-1918," database, Ancestry.com Operations, Inc., Ancestry.com (http://Ancestry.com: downloaded 21 March 2010), Roll 196, Division 14, District 29, Sheldon, New York, Jacob Yunker; citing National Archives (NARA) microfilm series M603.