Police found explicitly sexual images of a girl, eight, and 1,149 messages between Wilson and the victim, many of them graphically sexual.
Officers also recovered images and video of a seven-year-old boy’s genitals sent during a series of 206 messages and Facetime calls between Wilson and the victim.
In one of the incidents, which took place between 20, Wilson sent a video of a naked teenage boy to his mother.
Mark Anthony Wilson was sentenced at Teesside Crown Court on Wednesday.
