Hi Mich,
Your great grandfather Arthur's twin was Alfred. They twins were known as Icky and Blue. Albert or Billy, was my grandfather and he was youngest child of Catherine and John. My mother and her cousins have always insisted that Catherine was half Maori. Catherine apparently told her children that her mother Mary was Irish and her father John or James, was Maori. I assume your grandmother is Patsy - my mother is Marlene and they are first cousins. Our family history is not as straightforward as it seems and I have found out some very interesting stuff. If you like history, I would love to tell you more.