Tez on Family Tree Circles

Archie married Alice Jane Stanton in Adelong N.S.W. on 12th, October, 1903. He had two sons Thomas james Nicholls and William Reginald, known as REG. Thomas married Mary Thomson Makin Reid (from Alva, Scotland). They married in Sydney N.S.W. on the 15th September, 1928. Children from this marriage are Alan Thomas Nicholls (D), Robert Leslie (D), and Patricia Jean, Known as (Jean).
Archie disappeared circa 1912? and no record has come to light of his whereabouts since. I need info on his movements from this time to fill gaps in the family history. Any and all leads would be appreciated.
Terry Fulton