Mustered into service as a Private on July 29th, 1861
Private Downey was denied a pension in the summer of 1921 because his record shows he deserted the regiment on September 24th, 1863.
He was living in Kansas at the time of the filing.
In Cloud County Kansas at the St. Marys Catholic Cemetery there is a John Downey who died on January 30th, 1934 at the age of 100. It is possible this is the same man who served in the 19th Indiana.