Looking for Wailes Wales from Durham What is IN the Spelling

I am looking for family of Robert.Coulhard Wales .I am still new to looking on the internet and looking for things other than word of mouth..I had been looking for WALES and was getting nowhere then someone said try different spelling.Well I Did and up came where Robert was born and his parents and sisters and brothers.I was so happy so now if I come to a brick wall I just try different spelling .I still havn't found when he came to Australia but will keep looking .Still have so much to learn.When I hear what is in a name I smile