Frederick was born in 1839. He was the son of John Alden and Mary Copeland. He passed away in 1913.
He and his wife, Lizzie N. Restarick, had no children.
Sources
"Massachusetts Marriages, 1841-1915," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:N4W7-H69 : 10 March 2021), Frederick Hart Alden and Lizzie N. Restarick, 10 Jan 1885; citing Cambridge, Middlesex, Massachusetts, United States, State Archives, Boston; FHL microfilm 1,415,221.