Name of “Grant Arthur Oliver” from his son, Mark Oliver, in two emails dated 18 January 2021 from where he writes, "I was at function yesterday for my father, Grant Arthur Oliver, son of Robert William Oliver" and, " young Bob, my late Grandfather died early 1980s.
In a followup email dated 22 February 2021 Mark writes, "my grandfather Robert William Oliver was from that first marriage".
Mark Oliver is the son of this Grant Arthur Oliver.