According to one source, he was adopted.
In 1882, Theodore
buried his son Herman, who was killed when a piece of heavy machinery fell on him while he as at work in the City. Herman
was 34 years old and left a wife and three children. - pastlinks.com
Found him on the 1860 Township 3, San Mateo, California census (img 19) as Herman Finger
age 13, born Texas.
Found him on the 1870 Township 3, San Mateo, California census (img 6) age 23, farmer, single, living at home.
Found him on the 1880 San Francisco, San Francisco, California census (dist 220 img 22) as Hermann T. Finger
age 33, gardner. This census says born Illinois.
Herman Finger, the adopted son of Theodore Finger of Redwood, was killed on last Friday afternoon while at his work in the store of Holbrook, Merrill and Co. of San Francisco, by the fall of a heavy piece of machinery which he was loading on a truck.
The deceased having been raised in this community, was well known and has many friends. He was a remarkably steady man but the care of a wife and four children had left but little leisure for accumulation. He was but 35 years old and just in his prime. (interment at Union Cemetery.)