In 1855 the four brothers (Phillip, Karl, Jacob and Daniel) arrived in Australia from Bavaria in Germany and all of them finally settled in the Bairnsdale area. Jacob and Daniel selected land at Tambo Upper, north of Swan Reach in East Gippsland, and Jacob called his property Rheinhoff. The property stayed in family hands until about 2004. Jacob married Alexina Geraldine Boyd in 1878, and they had eight children. Alexina was the second child of John Boyd and Isabella Reid. Her sister, Mary Elizabeth Boyd married one of Jacob's brothers, Daniel, during the next year.
A copy of Jacob's Will, and an obituary from a local newspaper may be of interest.
The only photo I have of Jacob's family was taken at Rheinhoff in 1905, and it is probably from "The Tambo Shire Centenary History" by John David Adams, and published by the Tambo Shire Council in 1981.