I have a family that I can only find dates of birth for some of them. I have tried the LDS IGI and cannot find them, the ones I have are either from head stones or death certificates. Can anyone help me fill in any of the missing dates.

Parents are:-
John Quayle Mariner.........born ?-?-1864 died 15-6-1919
Edith Jane Quayle nee Corrin.born ?-?-1865 died 11-9-1930

Children are:-
Bertram Mayfield Quayle.......born 31-5-1896 died 6-10-1962
Edith Quayle..................born 14-4-1889 died 6-4-1984 USA
John Edward (Jack) Quayle......born ?-?-1890 died 8-11-1918
Dorothy Jane Quayle............born 14-4-1902 died ?-?-1976 USA
Sydney Quayle.................born ? died ?
Frances Quayle................born ? died ?
Kenneth Bridson Quayle........born ? died ?
Nellie Quayle.................born ? died ?
Annie Quayle..................born ? died ?
Nora Quayle...................born ? died ?

The family came from Castletown and the address given on Bertram's birth certificate was 19 Mill Street.

Thank you to anyone who can help Elaine