Sanger my family history

Hi i'm trying to find out about my families history. My grandads dad Frederick Sanger was born in Wiltshire in the village of Great Wishford.Frederick Sanger had a brother called George. He married Elsie Esmerelda Saunders in a church called St Nicholas in Tooting London. They had two children Derek Frederick Sanger and Shelia Sanger both born in Mitcham London.
I have found out that there was a blacksmith in the Great Wishford village in Wiltshire who's surname was Sanger I would love to find out more about this man.
If anyone thinks they could help me with my search i would be happy to hear from them. Thankyou.