The next rebellion against royal power in Transylvania broke out in 1467.[99] Irritated by a new tax that King Matthias Corvinus had just introduced, representatives of the Three Nations concluded an alliance against the monarch and declared the three incumbent voivodes (the brothers Counts John and Sigismund Szentgyörgyi and Berthold Ellerbach) their leaders. The king put down the revolt in a week, but did not sentence the three voivodes, because their active role in the revolt was never proven.[100]