(n.) One who entrusts something to another\; -- opposed to consignee.

Maecenas Robin Hood Santa Claus almoner angel assignor awarder backer benevolist bestower cheerful giver conferrer consignor contributor do-gooder donator donor fairy godmother feoffor financer funder giver grantor humanitarian imparter lady bountiful patron patroness philanthropist power for good presenter settler social worker subscriber sugar daddy supporter testate testator testatrix vouchsafer welfare statist welfare worker well-doer