Carl August, son of Gottlieb Ernest and Johanna Christaine (née Klempke) Rau was born in Prussia in 1830. He arrived in the colony aged 22 years
in August 1853 on the Wilhelmsburg.
He married Johanna Ernestine Bohm. They had the following children:
Johanna Wilhelmina Rau — born in 1855, died in 1855 aged 10 months, buried in an unknown location in the Grovedale Cemetery
John Ernest — born in 1856 in Geelong, died in 1914 aged 58 as a result of an accident (see article below)
Anna — born in 1869 at Paraparap, died the same year aged 8 months
Julius — born in 1869 at Paraparap, died on 8 Novmeber 1861 at Peubla, buried in an unknown location at the Grovedale Cemetery
Carl Erdmann — born in 1864 in Geelong, died in 1820 aged 55 in Geelong
In 1857 he purchased 126 acres of crown land on the south side of Thompsons Creek and planted an extensive orchard. The land had springs which enabled him to form a company to bottle mineral water.
He was a Barrabool Shire councillor serving from
1890 until 1895.
Carl died on 14 January 1896 at his home at Paraparap aged 65. Ernestine died in 1899.