www.novascotiagenealogy.com/ has John and Alfretta's marriage in 1881, that gives his parents as Gabriel and Mary (he is indexed as "Warden" rather than "Worden").
Also indexed under "Warden" is Mary Warden's remarriage to Andrew Fisher.
In 1881 Andrew and Mary are living together with I presume John in the household, even though "Alfretta" is going by "Sarah":
Name Marital Status Gender Ethnic Origin Age Birthplace Occupation Religion Andrew FISHER M Male English 60 Nova Scotia Farmer Baptist Mary FISHERE M Female English 55 Nova Scotia Congregationalist Dennison FISHER Male English 16 Nova Scotia Farmerson Congregationalist Ellen May FISHER Female English 10 Nova Scotia Congregationalist John WORDEN Male English 22 Nova Scotia Carpenter Congregationalist Sarah WORDEN Female English 24 Nova Scotia Congregationalist Bessie WORDEN Female English 3 Nova Scotia Congregationalist
Source Information: Census Place Canning, Kings, Nova Scotia Family History Library Film 1375809 NA Film Number C-13173 District 17 Sub-district A Division 2 Page Number 49 Household Number 221
The birth of "Ellen May" is listed under Mary Ellen Fisher in 1870 and gives her mother's name as Mary Orinda Pines (looks like "Pines" to me, at least).
The son "Dennison" in 1881 is David Dennison Fisher (mother listed as Mary Pines/Pineo at birth, definitely "Mary Pineo" on his death certificate).