If he was in Wrexham in 1911, you won't be able to see th census yet - it is due out shortly though and should be checked.
Have you followed up the suggestions of Piglet and Josephine on the previous threads?
Specifically, have you followed up the family found here -
http://www.rootschat.com/forum/index.php/topic,361755.msg2384514.html#msg2384514on the 1901 census to see whether they had a son?
Who were the witnesses on the marriage certificate? Did they marry in a church (which denomination) or register office - might help to determine which faith, which could be important if you're following an Irish family.
Did the name Dominic pass down the family? Were any of the siblings names mentioned - did any of those mentioned in the 1901 census from the thread linked above seem familiar from the next generation down?
I hope the answers will enable us to help you

~cariad~