Upholder

n.	1.
	1.	A broker or auctioneer; a tradesman.
	2.	An undertaker, or provider for funerals. The upholder, rueful harbinger of death. - Gay.
	3.	An upholsterer.
	4.	One who, or that which, upholds; a supporter; a defender; a sustainer.

Noun

1.

upholder - someone who upholds or maintains; "firm upholders of tradition"; "they are sustainers of the idea of democracy" Synonyms: maintainer, sustainer

Maecenas, abettor, admirer, advocate, aficionado, alpenstock, angel, apologist, approver, arm, athletic supporter, back, backbone, backer, backing, bandeau, bearer, bra, brace, bracer, bracket, brassiere, buff, buttress, cane, carrier, certifier, cervix, champion, confirmer, corset, cosignatory, cosigner, crook, crutch, defender, dependence, encourager, endorser, exponent, fan, favorer, foundation garment, friend at court, fulcrum, girdle, guarantor, guard, guy, guywire, insurer, jock, jockstrap, lover, mainstay, maintainer, mast, neck, notary, notary public, paladin, paranymph, partisan, party, patron, promoter, prop, protagonist, protector, ratifier, reinforce, reinforcement, reinforcer, reliance, rest, resting place, rigging, second, seconder, sectary, shoulder, shroud, sider, signatory, spine, sponsor, sprit, staff, stalwart, standby, standing rigging, stave, stay, stick, stiffener, strengthener, subscriber, support, supporter, sustainer, sympathizer, underwriter, vindicator, votary, walking stick, well-wisher