I am sure Elizabeth & William Hamer didn't have 4 sons
They had at least 2 children
Son
John Hamer
1822 – 1900
Birth 28 December 1822 in also 30/4/1822 Old Feild Road, Salford, Newton Heath, Lancashire, England
Death 24/2/1900 in Gayndah, Queensland, Australia
Married
Ellen Kinsy
Birth 14 Apr 1829 in Manchester, Lancashire, England
Death 15 Oct 1895 in Gayndah, Queensland, Australia
Daughter
Mary Hamer
Birth 1861 in Bury, Lancashire, England