(n.) One who gives or furnishes, in common with others, for a common purpose; as, a contributor to a book\.

Maecenas Santa Claus almoner almsgiver angel assignor awarder backer bestower cheerful giver conferrer consignor donator donor fairy godmother feoffor financer funder giver grantor imparter lady bountiful patron patroness philanthropist presenter settler subscriber sugar daddy supporter testate testator testatrix vouchsafer