Looking for Larkins Langdon of England

I am looking for John James Larkins, his wife Sarah Ann (nee Smith).

He came to Ballarat, Victoria, they had a son Frederick John, born 1882 in Ballarat, He married Louise Langdon in 1906.

John came from England.

Also looking for Louise's parents Thomas Langdon and Keziah Thomas, Thomas died in 1894 in Daylesford, Victoria.

Keziah was born in Cornwall.

Hope you can help, cheers, Rick Silverwood.