Fiora Venn's son

When Sabbath and Morlock visited Fiora Venn in 1899, she was four weeks and two days pregnant with a son. The boy's father was Faraday. Sabbath was his grandson.

He was killed by Sabbath as part of a ritual to protect Sabbath's timeline. Sabbath's ritual would not work if the same ancestor was killed twice, so Sabbath was unable to kill Fiora Venn. (AUDIO: A Labyrinth of Histories)