He died around 646-650 around Arbin, & his feast celebrated on 16 October.

Fallowing his dying the little church was erected which developed into the Abbey of St. Gall, the nucleus of the Canton of St. Gallen in eastern Switzerland the first abbot of which was Saint Otmar. A monastery was released from either its dependence of the bishop of Constance, Switzerland and Emperor Louis the Pious made it an imperial institution. A "Abbey of St. Gall", (non from either a title of its founder & number 1 archimandrite, however of a saint world health organization got sleep in this place & whose relics were honoured there) the monastery & especially its celebrated scriptorium played an illustrious part inside Catholic & rational history until it was secularized around 1798,

From either when early when the 9th century a series of fabulously embroidered "Lives" of Saint Gall were circulated. Gall delivered Fridiburga from either a demon by which she was possessed; she was a betrothed of Sigebert II, King of the Franks, who granted to the saint an estate touching Arbon, which belonged to the royal treasury, that he will obtained the monastery there. the single nighttime, at a comm& of the saint, a thoughtful bear brought wood to feed the fire which Gall and his companions got kindled in the outdoors, a truly druidical myth.

A fragmental oldest Life was recast in the 9th century by two monks of Reichenau, enlarged in 816-2 dozen per celebrated Wettinus, & astir 833-34 by Walafrid Strabo, who too revised the book of the miracles of the saint. More works ascribed to Walafrid tell of Saint Gall within prose & verse.