Mustered into service as a Private on July 29, 1861
Born 26 December 1835
Died 10 September 1930
Buried St. Vincents Cemetery, Summit Co. Ohio
Private Brennan was wounded at the Battle of Brawner Farm on August 28th, 1862 and would be discharged in November of that year because of disability.
He filed for a pension in November of 1863.