Hi Jack, Where do your Cartledges originate? The Frank Cartledge who was Steves grandfather and his brother John (my grandfather)did not have a brother Charley nor a sister Lulu. Their parents were Francis Cartledge and Catherine nee White who married at Manchester Cathedral in 1891. Francis Cartledge was born in Manchester in 1867. HIs parents were Francis Cartledge and Jane Drinkwater who married at Manchester Cathedral in 1857. This Francis was born in 1836(possibly in Rochdale) his parents were Isaac Cartledge and I think Martha.
I have got some other information such as sibling names if you think there is any connection. By the way this is Manchester England we are talking about. Let me know if I can be of any further help.