Looking for Family Tree of Peter Galloway Who Married Amy Hall

I grew up in gisborne New Zealand, 25 years ago I got a visit from a couple who said they were compiling information to write a book about the history of the Galloway family, I never heard any thing about a book after that, I do remember they had some photos of my great grandfather Peter Galloway and his wife Amy hall, her father was Fred hall a prominent businessman in gisborne. I think there was a photo of Peter and his brothers as well. My grandmothers name was Norma Galloway, she married John Edwards and my father is Francis Galloway .