I am not sure whether we have any connection, but my Grandfather was a John Davey he married Annie Davey (Ann Eliza Boyle) they had 6 children. Mabel, John Ernest, Ann, Winifred, Hilda and Horace (my father). John Ernest being my uncle. I am the only daughter of Horace and the other surviving relative in the UK is the daughter of Winifred.
Perhaps this could be of help to you.