Usted buscó: the league of legends (Inglés - Latín)

league of the three emperors
foedus trium imperatorum

and after the league made with him he shall work deceitfully: for he shall come up, and shall become strong with a small people.
et post amicitias cum eo faciet dolum et ascendet et superabit in modico popul

quinquegentianus, quinquegentiani five_nations; (league of desert people against romans - 3rd century mauretania);
quinquegentiani

concilium, concili(i) public gathering/meeting; popular assembly, council; hearing; debate/discussion; association, society, company; union/connection (of objects); league of states; sexual union/coition; close conjunction; bond of union; plant iasione blossom;
concili