Video: Fuller murders: grandfather posts videos of children on Facebook The father-in-law of Ceri Fuller, who stabbed his three children to death before throwing himself down a disused quarry, shot the footage himself in a local park during the children's visit to their grandparents house. Ron Tocknell, an illustrator, said that he was "proud" of Fuller and whilst no-one might ever know what drove him to killing the children, he was a good father who raised them with "love and joy and laughter." Fuller, 35, is believed to have stabbed son Sam, 12, and daughters Rebecca, eight, and Charlotte, seven, to death in secluded woodland 75 miles from their home before jumping 65ft to his death.