Thanks everyone for taking the time and trouble . K Garrard yes i will try and remember these little details like names

. His father is called Thomas Collins ,Williams birth year on his attestation ,marriage certificate and BDM index is 1883/4 .
Shaun J ihave never even seen that file its great , i have seen his pension record short term attestation and medal roll index so i didnt even know about the fourth medal and its absolute proof of his mothers name . It also shows 18 Thursfield Street , his uncles house where he lodged and got married from . The witnesses are Uncle Joseph and his wife Alice the other marriage you mention was Josephs son .
AVM 228 that certainly looks like them , i put their names on ancestry search and someone has done research them , Martha certainly moved around didnt she .
Annette7 your suggestion would sound right if they came to Salford soon after Williams birth he would have untill before 1891 census to fix Salford in his memory because the famiy are never on Salford census always moving .
Once again thank you all for such speedy replies ,Mike .