Elwells became Spear and Jackson my husband's sister used to work for them. He grew up in The Pleck just the other side of the M6. But he is only in his late 40's.. A lot of the terraced streets were levelled in WW2 because it was a target being such an industrial area. The terraced streets that survived the bombings in Wednesbury were demolished in the 50's and 60's.
There are no fields at all in Wednesbury other than Brunswick Park. Brunswick Park is constructed mostly of spoil heaps from the coal workings which were all around Wednesbury. Good chance the Black Country Museum in Dudley could help.