tutelary \TOO-tuh-lair-ee; TYOO-\ (adjective) - Having the guardianship or charge of protecting a person or a thing; guardian; protecting; as, "tutelary goddesses."
"But there is a tutelary deity for misers, and by a chain of unforeseen circumstances that tutelary deity was so ordering matters that the purchase-money of his extortionate bargian was to be tumbled after all into the old toper's pouch." -- Honore de Balzac, 'Lost Illusions'
Tutelary derives from Latin tutelaris, from tutela, protection, guardianship, from tutus, past participle of tueri, to look at, to regard, especially to look at with care or for the purpose of protection. It is related to tutor, to have the guardianship or care of; to teach; to instruct.