Lord of Griffin's Roost
House Connington was a full-fledged noble house during the reign of House Targaryen, but King Aerys II Targaryen stripped Lord Jon Connington of his title and lands after the Battle of the Bells. After Aerys's death during the Sack of King's Landing, the new king, Robert I Baratheon, allowed Jon's cousin, Ser Ronald Connington, to retain Griffin's Roost. Ronald lost the title of lord, however, and the Conningtons were reduced to landed knights. Ser Ronnet Connington, Ronald's son, is the current Knight of Griffin's Roost.
A Dance with Dragons
During the landing of the Golden Company in the stormlands, the exiled Jon Connington leads the taking of Griffin's Roost. Ser Ronnet Connington, the Knight of Griffin's Roost, is away in the riverlands and his castle quickly falls to the invading sellswords. Jon restores usage of his previous title, Lord of Griffin's Roost.