Hi David, I have some information on Emma COULING that I hope will be useful for you. Tne 1851 Census of High Street, Churchill, Oxfordshire, England shows the family of Elijah COLING aged 40 and his wife, Eliz. age 39 as: James16 Charles14 Mary A.12 Eliz.10 Fanny8 Dinah6 Emma4 Hannah3 Emily1 month
Their oldest son, William COLING aged 20, his wife, Mary Ann aged 22 and their son, George aged 3 months are also listed there.
Their second oldest son, George aged 19, was not listed with the family.
As for names: When Elijah married Elizabeth (COGBILL) in 1830, his surname was spelled COULDING. When his son, William sailed for New Zealand, his surname was COOLING. On his gravestone, he is William COULING.