comforter (n.)

mid-14c., "one who consoles or supports in distress, anger, etc." (originally in religious use, with capital C-, "the Holy Ghost"), from Anglo-French confortour (Old French conforteor) "helper, adviser, supporter," from Vulgar Latin *confortatorem, agent noun from Late Latin confortare "to strengthen much" (see comfort (v.)). As a kind of knitted, crocheted scarf fit for tying around the neck in cold weather, from 1817; as a kind of quilted coverlet, from 1832.