What happened at the great council meeting 1258?

Answer 1

The barons who sat on the great council thus developed a sense of being excluded from the work of government in which they felt entitled to participate. It was baronial discontent that led to the troubles under Henry III. When the barons took over the government in 1258, they determined that the great council should meet three times a year, and they called it a parliament. When Henry III regained power, he continued to summon the feudal magnates to the great council, to parliament