The Lords Declarant are a group of nobles from the Vale that sign a letter stating their intent to remove Lord Petyr Baelish as Lord Protector of the Vale by any means necessary. The letter, signed at Runestone, is sent both to the Eyrie and King's Landing.
Lord Yohn Royce, head of House Royce.
Lady Anya Waynwood, head of House Waynwood.
Lord Gilwood Hunter, head of House Hunter.
Lord Horton Redfort, head of House Redfort.
Lord Benedar Belmore, head of House Belmore.
Ser Symond Templeton, head of House Templeton, oft called the Knight of Ninestars.
A Feast for Crows
The Lords Declarant, after sending the letters, mass their forces beneath the Eyrie, intending to blockade the fortress until Lord Petyr surrenders. Each Lord brings a thousand soldiers. Queen Cersei Lannister sends a letter ordering safe passage for Petyr but otherwise the terms would be decided amongst themselves.
After some time of denying access of food and other goods from the outside to the Eyrie, the Lords Declarant negotiate a meeting and arrive with Lyn Corbray to confront Petyr with their objections to his rule and their insistence at taking Lord Robert Arryn away from him. However, their demands are stymied by a display of belligerence from Corbray, which shames the Lords Declarant into giving Petyr a year to show his prowess at raising Robert and ruling the Eyrie. As it turns out, Petyr has his own agent among them and believes the weaknesses of the Lords will make them easy to manipulate from now on.
Lord Benedar, Lady Waynwood, and Ser Symond attended the wedding of Lord Lyonel Corbray in Gulltown, an event arranged by Petyr Baelish. The other Lords Declarant shun the wedding. Petyr had bought up the debts of the Waynwoods and persuaded Lady Anya to give permission for Sansa to wed her ward, Harrold Hardyng, if Harry agrees.