The Tyrells rose to power as stewards to the Kings of the Reach, whose domain included the fertile plains of the southwest from the Dornish marches and Blackwater Rush to the shores of the Sunset Sea. Through the female line, they claim descent from Garth Greenhand, gardener king of the First Men, who wore a crown of vines and flowers and made the land bloom. When King Mern, last of the old line, perished on the Field of Fire, his steward Harlen Tyrell surrendered Highgarden to Aegon Targaryen, pledging fealty. Aegon granted him the castle and dominion over the Reach. The Tyrell sigil is a golden rose on a grass-green field. Their words are Growing Strong.
MACE TYRELL, Lord of Highgarden, Warden of the South, Defender of the Marches, High Marshal of the Reach,
— his wife, LADY ALERIE, of House Hightower of Oldtown,
— their children:
— WILLAS, their eldest son, heir to Highgarden,
— SER GARLAN, called the Gallant, their second son,
— SER LORAS,the Knight of Flowers, their youngest son,
— ARGAERY, their daughter, a maid of fourteen years,
— his widowed mother, LADY OLENNA of House Redwyne, called the Queen of Thorns,
— his sisters:
— MINA, wed to Lord Paxter Redwyne,
— JANNA, wed to Ser Jon Fossoway,
— his uncles:
— GARTH, called the Gross, Lord Seneschal of Highgarden,
— his bastard sons, GARSE and GARRETT FLOWERS,
— SER MORYN, Lord Commander of the City Watch of Oldtown,
— MAESTER GORMON, a scholar of the Citadel,
— his household:
— MAESTER LOMYS, counselor, healer, and tutor,
— IGON VYRWEL, captain of the guard,
— SER VORTIMER CRANE, master-at-arms,
— his knights and lord bannermen:
— PAXTER REDWYNE, Lord of the Arbor,
— his wife, LADY MINA, of House Tyrell,
— their children:
— SER HORAS, mocked as Horror, twin to Hobber,
— SER HOBBER, mocked as Slobber, twin to Horas,
— DESMERA, a maid of fifteen,
— RANDYLL TARLY, Lord of Horn Hill,
— SAMWELL, his elder son, of the Night’s Watch,
— DICKON, his younger son, heir to Horn Hill,
— ARWYN OAKHEART, Lady of Old Oak,
— MATHIS ROWAN, Lord of Goldengrove,
— LEYTON HIGHTOWER, Voice of Oldtown, Lord of the Port,
— SER JON FOSSOWAY.
Principal houses sworn to Highgarden are Vyrwel, Florent, Oakheart, Hightower, Crane, Tarly, Redwyne, Rowan, Fossoway, and Mullendore.