Sam was an extremely minor character, mentioned only once in Keys to the Demon Prison. In a daring move, Laura warned the Fablehaven team that Obsidian Waste had been overrun, and she led an escape to the Dreamstone. Immediately afterward, a narcoblix named Wayne, speaking through Berrigan, informed Laura that her sister, brother-in-law, and nephew had been killed in retribution, as well as Sam, Corbin, and Lois.
It is unknown if Sam was a man or a woman, or if they were related to Laura or just worked on the preserve.