House Tyrell is one of the Great Houses of Westeros. It rules over the Reach, a vast, fertile, and heavily-populated region of southwestern Westeros, from their castle-seat, Highgarden. It is currently led by Lord Mace Tyrell, although his mother, the indomitable Olenna Tyrell, still wields considerable influence over the House's affairs and is usually considered the true leader of the family. Mace's daughter Margaery married Renly when he crowned himself king, to cement the alliance between Renly and her father. Following Renly's death, Margaery was then married to King Joffrey Baratheon before his assassination at his wedding feast. The Tyrell sigil is a golden rose on a pale green field. Their motto is, "Growing Strong".