Hello, I am tracing my ancestor Friedrich Peter Schwerdtfeger. I know that he was born in Germany around 1818, and on his Australian naturalisation papers he said that he was from the Duchy of Brunswick, but this may or may not have been where he was born. His father was Heinrich Schwerdtfeger and his mother was Elisabeth Koch (or Kach or a similar surname). He emigrated from Germany to Australia in 1849/1850 aboard the Hamburg Brig "Antonie". So far I haven't been able to find shipping records or records of any kind regarding his German origins. Any help would be really appreciated. Thanks!