RUNCIMAN: Fenwick 49 gas stoker b Co DUR; wife Barbara 49 b NBL marr. 23 yrs 6 children, all living (!! what about Fenwick b 1890 d 1896, and I make it 8 children); Children: Mary 19 glass works labourer, George 17 carter, Sarah 16 glass works, Amelia 13, Fenwick 10 both school, James 8, all b Gateshead; Mo in law Barbara CAISLEY wid 70 b NBL 8 children 7 living 
↑ Source #S1: 1911 Gateshead, DUR RG14PN30411 RG78PN1748A RD557 SD2 ED1 SN44, hsehold of Fenwick & Barbara RUNCIMAN
Source S1 Census images for England via Ancestry.com
It may be possible to confirm family relationships with James by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: