davey39.
On C1891 in Warkworth ( 4261-55-8) a Luke Youll, farm servant, aged 24, is recorded as born Sheriff Hill, Co Durham.
Your Luke was an "Agricultural labourer" on C1881.
On C1891, Violet Oliver, 14, in household of George/Jane Youll, which has moved to Pegswood village ( between Morpeth and Ashington).
No trace of a Belford area-born Luke Youll anywhere on C1891.
Michael Dixon