Alfred Beadle
From Tardis Wiki, the free Doctor Who reference
Alfred Beadle was an inhabitant of the village of Crook Marsham.
His sister Betty encouraged him to enlist. After he was killed during fighting, she blamed herself for his death. When the Sentience manifested in 1968, it appeared to her as Alf so it could use her guilt to let it feed on and kill her. (PROSE: Nightshade)