When and on which ship did James ROBERTSON (1812-1887)& his wife Ann (BYERS) (1818-1894) emigrate from Cruden, Scotland to Tasmania, Australia?
James Robertson was born in Cruden, Aberdeenshire and his wife Ann Byers was born in Peterhead. They had three children prior to emigrating to Australia. These are Agnes (1839), Mary (1940) ( mentioned in the 1841 census) and James, who was born in January of 1842.
As their fourth child, Ellen was born in Tasmania, Australia about 1844/1845, their arrival is most likely to be around 1842-1845.
I have been searching for years to find out the date and the name of the ship.
Does anyone have any suggestions that may guide me in my research?