Syntyche is a female saint belonging to the Philippian church. Although her detailed history is not recorded in the Bible, it seems she had a conflict with another female saint, Euodia.
Phil 4:2I plead with Euodia and I plead with Syntyche to agree with each other in the Lord.Phil 4:3Yes, and I ask you, my true companion, help these women since they have contended at my side in the cause of the gospel, along with Clement and the rest of my co-workers, whose names are in the book of life.