Besides Paul, were any saints complicit in the martyrdom of other saints?

According to [Acts 8:1](https://bible.oremus.org/?passage=Acts%208:1&version=nrsv) and [Acts 22:20](https://bible.oremus.org/?passage=Acts%2022:20&version=nrsv) , Saul participated in the martyrdom of Stephen, at least by granting approval to those who physically stoned him to death. Saul later underwent a conversion and became recognized (by the Roman Catholic Church and in Christendom generally) as a saint, St. Paul. Are there any other saints recognized by the Catholic Church who had participated in the martyrdom of other saints recognized by the Catholic Church?