Looking for Family IN the Hunter Area with the Surname OR Past Family with the Surname of Laughton

My great grandmother was louisa k laughton.she married Edwin T Miller in 1898 in Newcastle nsw.Her father was David Laughton and her mother was Clara H.I can't find a marriage for these two.Perhaps they were married in England? Louisa died in child birth in 1911. Her other children were Lily M Miller b1899, Ethel Miller b 1902(my grandmother),James Miller b 1907.Her last child did survive and I think his name was Clarence or Clarry?I would be greatful for any help.