Tunks or Tuncks or Tonks

I am trying to find my husbands great great grandfather a George Tunks born abt 1733 in Shropeshire england somewhere he married a Mary Yates in 10 10 1758 at Dawly Magna Shropeshire they had two daughters elizabeth and ann three sons thomas william george, thomas married a Jane Phillips in 1797 we CANNOT FIND GEORGE TUNKS Please HELP ME