Comforter

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late Middle English: from Old French comforteor, from conforter ‘to comfort’ (see comfort).

wiktionary

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From Anglo-Norman confortour, from Old French conforter. See comfort.

etymonline

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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.