Jeff, I am from Australia, We are the Australian Larbey's, once English Larbeys. My father was William Lionel Larbey. Married Barbara Jones. Had Four Children Ralph (myself), Trevor (Brother), Deborah and Jaqueline. Between us all we have 9 children, four of which are boyrs and will have the Larbey name.
My Grand Father was Lionel Arthur Edward Larbey who lived in Bounds Green, Middlesex, died 1960's. Had three sisters but do not know thier names. Loinel married a Nellie Cook and had two chilren, my father and his sister Mazey who became an Unthank of Barnet. Then moved to Mutchhadem, Hertfordshire. Had two children Derrick & Peter Unthank, still living in hertfordshire.
My Great Grand Father was born around the time of your Grand Mother however have lost any linkage, however in our family the name william has been used for the four generations that I am aware of.
This set of Larbeys are seafarers, My GGF, was with Lloyds at London Dock, Father was at sea with British India Steam Navigation, I was at sea with BHP as was my brother Trevor.