John Pilgrim? Or the guy played by the dad from Psyche?The latter hired the former to get rid of Frank and the girl to bury blackmail info about his son being gay. John Pilgrim had the extra motivation of his employers having his wife's life in their hands (and then his sons' lives after she died). Pilgrim was apparently based on a character called the Mennonite. Pilgrim's only beef with Frank was him being an obstacle between him and his family - in the end, Frank reunited Pilgrim with his sons and they parted peaceably enough.
Aaand... it's gone.This and Jessica Jones cancelled. :\