Tina, we are going round in circles now and ,whether you want to know your fathers past or to find him now, you will not get a clear answer until we can verify his full name.
We have ascertained that the Hadley family in Inkerman street is your mom so the next step would be to get the marriage certificate of the June Hadley who married William L Mills in March qtr 1957 birmingham.
To save yourself paying the fee for nothing use the criteria that her fathers name must be Joseph.
You can get it direct from Birmingham register office cost approx, £12