William Thomas Walker
born September 1841–September 1842
  in Haltwhistle, Northumberland
died May 1891–May 1892
  in Gateshead

According to Debbie Howse: baptism Haltwhistle No. 526, 17 April 1842.

1861 census: Debbie Howse says 'William Walker age 19 born Haltwhistle at Auckland'.

1871 census: living with wife and children on Dyke Row, Framwellgate Moor. Age is 29, place of birth is Haltwhistle, Northumberland. Occupation is miner.

1881 census: living with wife and children at 78 Smokey Row, Framwellgate Moor. Age is 39, place of birth is Haltwhistle, Northumberland. Occupation is coal miner.

1891 census: living with wife, daughter, and visitor at 21 Askew Road West, Gateshead. Age is 49, place of birth is Hexham, Northumberland. Occupation is coal miner.

He died sometime between 1891 and 1901 (when his wife is described as a widow). Debbie Howse found an entry in the death index which might be him: William Thomas Walker died Dec. quarter 1891, Gateshead.