The late Cyril Gurney was my uncle, a brother of my father, the late Frederick Edwin Benjamin (Roy) Gurney (& six other siblings). Their father was Frederick Edgar Beltram Gurney and his father, Frederick Lamb Gurney. Fred.L. Gurney was second (living) son of Benjamin Gurney & Eliza (nee Lamb).
Tanya: Would your dad be Neville? If so he would have a copy of the 378 page book I wrote in 1999 titled "The Gurney-tree and History"
caggt: My dad would also have been a brother to your Grandpa...who is your Grandpa?
And Tanya would be your second cousin.
Please e-mail me on firstname.lastname@example.org