Petyr van Abel is member of the Talamasca in the mid 1600s. His father was a doctor who dies when Petyr is young. Petyr rescues Deborah from Scotland. Later, he witnesses Deborah's death. He travels to Saint-Domingue to give Charlotte a message from her mother. He realizes that he is Charlotte's father from his coupling with Deborah before she leaves for France. Charlotte imprisons Petyr to force him to father a child with his strength, so he becomes both father and grandfather of the next generation of Mayfair witches. His letters provide extensive information to the Talamasca about the first generations of the Mayfairs. He dies in a cemetery, presumably tricked by Lasher.