Jackson Canmore was a human male and the twin brother of Fiona Canmore. He was also a Hunter.
The royal family's family tree
In 1910 and under unknown circumstances, Jackson Canmore was killed fighting Demona. His death drove Fiona Canmore to take up the hunt for "The Demon", as would his son, Aron Canmore.
Jackson was the father of Aron Canmore, the grandfather of Charles Canmore and the great-grandfather of Jason, Robyn and Jon Canmore.