Editing Unio Trium Nationum (section)

===Brotherly Union (Union of Kápolna)===
Despite the pressing issues at hand, the Transylvanian Diet was still not called together by the [[Voivode of Transylvania|Voivode]], resulting in the various nobles initiating a meeting of the three nations. After a gap of almost half a century, the estates now had the opportunity to discuss Transylvanian issues together. On this occasion, the nobles set up an alliance with [[Székelys]] and [[Transylvanian Saxons|Saxons]] who were still afraid of possible Ottoman incursions. The alliance of mutual aid, signed in Kápolna (present-day ([[Gâlgău|Căpâlna]]), was called the ''Fraterna Unio'' (Brotherly Union), and was designed to protect the parties both from revolts and Ottoman attacks. While the existence of the Union helped the indigenous inhabitants to re-negotiate and partly modify the terms of the previous agreement, the alliance did not organize any serious military operations until the end of 1437. At that time, the alliance defeated the opposition after the death of [[Sigismund, Holy Roman Emperor|King Sigismund]] in December.