According to the post, D&D are: “About 6 years ago we met David at a convention somewhere in the USA (I think it was Omaha, Nebraska). We subsequently met Davids better half, Dana, and they stayed with us in Halifax in about 2015 on a visit from their home in San Francisco. When Ben and Jemima toured the West Coast later that same year, they stayed with various friends and family, including a stint with Dave and Dana, and their large cat collection.”

They are both authors – we know Dave through his non-fiction work, but they also both write fiction, with Dana a recognised Fantasy genre writer, and a joint set of fantasy novels co-written by both.