Peter Garrabrandt -Civil War Veteran-Married Sara

I am trying to find out about Peter Garrabrandt's parents. Peter was born about 1843, died on February 11, 1879 and enlisted in the Union army at Bayonne, NJ August 1862 and fought with company C, 21st regiment.I have the muster rolls documenting what this regiment did during the war. He married Sarah Witts on March 8, 1969 in Hudson City, NJ. Peter had 3 children; Jesse Alfred born 1871, Arthur born 1875, and a daughter Lucy born 1875. Lucy is my great grandmother.