He was "a prolific writer", writing numerous letters to the editor of the Waikato Times and editing articles on Wikipedia about subjects such as the Auckland suburb of Bucklands Beach, where he grew up.
He had been working with his mother, until she died earlier this year, on a documentary project about World War I.
"His other passion was around woodwork," Ann said. "He built canoes and dinghies. He loved to potter, making tables and things. Lots of things around the home were built by him."
He was a keen cyclist, motorcyclist and sailor.
"He did bike a lot, on his bike or on his motorbike, or he'd be out biking or walking. He liked to keep fit," Ann said.
He is survived by Ann and their children Matthew, 26, and Kate, 24.