House Targaryen of Summerhall

House Targaryen of Summerhall is a noble family of Valyrian descent, and a cadet branch of the mainline House Targaryen who has ruled the Seven Kingdoms of Westeros for over three-hundred years. The Targaryen sigil is a three-headed dragon breathing flames, red on black, with a single red brodure. The house words are "No Better Friend, No Fiercer Foe". Originally meant as a seat for Prince Aegon Targaryen and his family following the Great Council of 233 AC, Summerhall instead became the Lords of the Dornish Marches as well following the murder of Prince Aegon, Duncan the Tall, and Prince Baelor at the hands of the marchers, House Caron in particular.

Though unpopular with their own vassals for the history between them, House Targaryen of Summerhall is generally well liked outside of the Stormlands, now more than ever given their adherence to the Faith of the Seven. That said, they remain close allies with the mainline, with the current Prince of Summerhall having wed the youngest of the mainline's women, Princess Vaella. The two had grown close in during the Prince and his twins warding at the Red Keep, and the Old King himself proposed the match, though she would die in childbed.

In addition to the marcher lords sworn to Summerhall, House Tall, descending from the legendary Duncan the Tall, are also in their service.