DMG72 on Family Tree Circles

I am searching for any family information regarding the family of my grandfather, Edward Theodore JONAS, born in Gerangemete, Victoria.

His great grandfather, Edward Frederick William JONAS, was born in Preetz, Germany in 1857 and arrived in Australia in 1884 on the Ship, Victoria, berthing in South Australia in 1884. He applied for naturalisation in May 1898 with no papers from Germany.

Any information or advice will be gratefully received. Thank-you :)