Birth Registers for Isaac Briggs reveal two potential candidates in the period 1852 to 1855:
18 Jul 1852. St Mary, Prestwich, Lancashire, England "England, Manchester, Parish Registers, 1603-1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FMR8-GQV : 10 December 2017), Isaac Briggs, 18 Jul 1852, Christening; citing St Mary, Prestwich, Lancashire, England, Manchester Central Library, England; FHL microfilm 2,356,183.
1871 Lived in Prestwich.18 year old Isaac Briggs is a bricklayer - parents Isaac and Elizabeth
1911 Census he gives Prestwich as his place of residence.
Isaac Briggs was born in Pilkington, Lancashire, England in 1855.
He married Francis Annie Dubberley in 1881. 
In 1881 the couple lived at 249 Chatham Street, Salford.
Isaac and Annie baptized four of their children on the same day, 12 May 1900, at St. Alban, Cheetwood.
In 1901 the family was still at Pemberton Street. Mabel is not on the record at the address. Seventeen year old Ethel was working as a Restaurant Waitress and Eunice as a cap presser. Other children present are Maud, Reginald, Annie, Eleanor C. and Sydney.
Death record - may be him: https://search.ancestry.co.uk/cgi-bin/sse.dll?db=FreeBMDDeath&h=4075776&indiv=try&o_cvc=Image:OtherRecord
Isaac Briggs was the father of Ethel (Briggs) Kershaw. Following her records let to finding Isaac and Annie in the 1891 and 1899 census returns, and hence the marriage between Isaac and Francis Annie Dubberley. All of the census returns for Isaac Briggs lead to a birthdate of 1855.
1891 England Census
1901 England Census
1911 England Census
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