I found who I believe to be Sherburn's brother George, who married Mary Kneeland. He apparently moved to Albany, Oxford, ME. He lived by Kneelands.Jonni Sue has him in her database but has no parents listed for him. His age fits exactly where I suspected from the census. He was born between 1811-1813 and died 8 May 1864 from disease in the civil war, probably in Louisiana. He was a private in Maine's 29th Infantry Regiment, Company G.
Jonnie Sue lists some of his children but the census shows more.
1840 Enfield, Penobscot, ME George Fernaldx1xx11xxx1
1850 Albany, Oxford, ME George Fernald 37 Mary 36 Chelsey 17 male Nancy 11 Oliver N 8 George 7 Juliette 3m
1860 Albany, Oxford, ME G W Fernald 47 Mary47 Oliver N18 George W 14 Julia E 10 Hersey A 4
George died in 1864 and I can not locate the family in 1870. Their son Oliver is working in a sawmill in Raymond,Rockingham, NH.
1880 Albany, Oxford, ME Mrs. Mary Fernald66spinal disease Hersey E.23 Nellie18
Charley H. Fernald 47(Chelsey) Lizzie 43 Alton L.20 Nellie A.17