Ann, it looks like Job married Elizabeth Ashmore in q3 1907 about 6 months after Thomas was born (q1 1907). In the 1890s and early 1900s the GRO index shows a few births for Ashmore children with mother maiden name Jackson. However I have been unable to find an Ashmore marriage to Elizabeth Jackson.
Hope that helps
Dave
Edit, take a look at 1901 census in Brightside Bierlow. You Job Ward is boarding with the Ashmores.
Edit 2 Elizabeth's husband Charlie Ashmore died q1 1906.