Looking for My Grandfathers First Wife Name Unknown His Name is Herbert Brook Blincoe

My fathers name is leslie Graham Blincoe his father was Herbert Brook Blincoe as I have heard my fathers mother left Herbert Brook Blincoe with my father being the youngest of 3
I dont know my fathers real mothers name .... Herbert Brook Blincoe married a Ngaire Elizibeth Barker .... Help please if you have any information that might help me .