In 1860 Randolph, MA., Samuel Fernald is 27 and Elsia A. is 22 He was a boot maker.
In 1870 Randolph, MA., Samuel Fernald is 37 and works in Boot factory Elsie A.33 Mary L. 4 Katie M. 1 Elizabeth 77(mother) all born in MA.
In 1880 Randolph, MA., Mary L. Fernald, age 14, is living with her Uncle William D.S. Fernald/Furnald age 53 and Aunt Eunice 54.
I can't find Sam, Elsie nor Katie in 1880.
In 1900 Randolph, MA., William DS Fernald is widowed. and has an adopted daughter Mary L. b. Feb 1866. She is 34 and single, and probably Samuel's daughter. Both of William Fernald's parents were from Maine. (William S. and Elizabeth) He was born in MA in Mar 1826. It appears that William had no children of his own through the census. I can not find Mary after 1900. And it looks like William passed away about then.
In 1850 Boston, MA there is a Mrs. Fernald b. abt 1795 In 1840 Boston, MA there is an Elizabeth Fernald age 40-50 in 1830 Boston there is William S. Fernald 40-50 In 1820 Quincy, MA there is William S. Fernald 26-45 Also in 1820 Quincy, there is a Lemuel Furnald over 45.
There is an LDS record that lists a William Stacey Fernald born in 1790 Kittery Maine that may be the same William S. but his death is listed as 1854. And it has his spouse as Elizabeth Batson or Hayden. Also, it appears that Elizabeth was widowed by 1840. But perhaps they seperated. If he is the same William, then he was the son of Dennis Fernald and Elizabeth Stacey. Otherwise I'm thinking Lemuel may be his father or older brother. There were not many Fernalds in MAss. at that time.