Crikey, I see he married Mary Ann Smith in Sunderland, 1910, and there is a newspaper article in July 1911 about a William Turner aged 21 of Sunderland charged with attempted murder of his 5 1/2 month old child.  
Checking the prison records the child was Elizabeth Ellen Turner:
TURNER, ELIZABETH ELLEN  mmn SMITH  - 1911  M Quarter in SUNDERLAND  Volume 10A  Page 675
Pleaded guilty, got 2 months hard labour  
