Hi Peter,
Alexander Muir and wife Mary nee Graham left Liverpool 3.11.1853 on the ship Utopia, arriving in Portland 25.1.1854. They married 26.5.1827 at Kilmartin, Argyll, Mary died 9.11.1878 at Emerald Hill, her parents Donald Graham and Flora nee Henderson. The 4 children you mention were all born in Soctland, they were assisted passengers, Presbyterian. Their son James is my line, he was b. 1842 Renfrew, John 1828, North Knapdale, Flora 1833 North Knapdale, Ebenezer c. 1.2.1851 Greenock, and on Mary's death certificate children listed as John 49, Alexander died, Daniel died, Flora died, Jane age 43, Catherine 40, James 35, Mary 32, Ebenezer 29.
Alexander died prior to Mary and he was buried at the Maryborough, Victoria cemetary.
Catherine m. Edward Stubbs, she died 1918 South Melbourne.
James Campbell Muir m. Mary Ann Debney, Mary Muir and James Burrell had a son Ebenezer 1874, record of their marriage not found but she m. Joseph Moyle Williams.
Train drivers, stationmasters throughout the family.
If you would like copy of certificates, let me know.
cheers Jill