Samuel was the son of Benjamin Hartman, Jr., and Rosanna Bell.

He married Sarah Ann Warfel on 24 December 1867 in Leitersburg, Washington Co., MD and too this union ten children were born; Mary RoseZella 1868, Benjamin Calvin 1870, Frederick Phillip Piper 1873, Emery Wilmer McComas 1875, Sarah Katherine 1877, Samuel Edward 1879, Emma Elizabeth 1882, Charles Harry 1884, Harvey Walter 1885 and Cora May 1888. Samuel and Sarah moved to Holland Community in the early 1900's with four of their children, Frederick joined them between 1918-1920.

The following is from "History of Leitersburg District Washington, County, Maryland" written by Herbert C. Bell, Published by the Author in 1898
Samuel Hartman was born in Leitrsburg Ditrict, April 26, 1845, the son of Benjamin and Rosanna Hartman. He obtained a common school education and served an apprenticeship to the milling business at Brown's Mills, Pa., under his uncle, Andrew Hartman, by whom he was subsequently employed at the Old Forge mill, which he afterward operated. From 1867 to 1880 he was employed as a farm laborer. In 1880 he operated the Old Forge mill in partnership with George H. Bowman, after which he was employed for three years by the Kemps in their mill at Breathedsville. He was then engaged in farming until 1896, with the exception of two years and a half, when he was toll collector on the Sharpsburg turnpike. Since 1896 he has operated the Morning Star mill in Leitersbur District and served as postmaster at Startown. In 1867 he married Sarah A., daughter of Philip and Mary (Hill) Warfield, and their children are Rosella; Benjamin C.; Frederick P.; Emory W. Mec.; Catharine; Samuel S.; E. Emma; Charles; Harvey, and Cora M. Mr. Hartman is a member of the German Baptist Church; he is independent in politics.

After moving to Holland Community he spent the rest of his years farming.