In 1889 he was age 73 and living in Joanna, Chester, Pennsylvania.
In 1891 he was age 75 and living in Honeybrook, Chester, Pennsylvania - Civil War Pension Record, William Finger - NARA.
Found him on the 1850 Salisbury, Lancaster, Pennsylvania census (img 64) as Robert Rettew
age 34, miller. He is living next to Elijah Rettew
age 27. Relationship unknown
Found him on the 1860 West Caernarvon, Berks, Pennsylvania census (img 9) as Robert Rettew
age 40, farmer. Also in his household is Ann Smith
age 26, teacher of school. Possibly his wife's sister.
Found him on the 1870 West Nantmeal, Chester, Pennsylvania census (img 8) as Robert Rettew
age 53, farmer.
Found him on the 1880 West Nantmeal, Chester, Pennsylvania ceusns age 62, farmer. Father, mother born Pennsylvania. Interestingly, his close neighbors are Israel Finger
, age 62, farmer and Israel's son's family, Clemison Finger