There is another Alfreda/ Freda E. Fernald born May 1855, daughter of Elliot Fernald and Ruth Dearborn. This Alfreda married Theodore T. Young on 11 Feb 1885 in Saco ME. They had 3 children by the 1900 census but only 1 daughter survived, Ruth M. Fernald born May 1892. Ruth was still single in 1930, Theo was widowed.
There is a Ruth M. Young who married Stephen H. Taylor on 31 July 1941 in Saco, but if it is her, she would be about 49 years old, so she may not have had any children.
Alfreda Fernald daughter of John Q. Fernald was still unmarried in the 1880 census. I haven't been able to track her any further.