What is another word for "holder"?

Roget's Thesaurus (1911) lists these synonyms for "holder": abettor, accessory, accomplice, adherent, adjunct, adjutant, adjuvant, advocate, after, ally, alter, angel, apparent, assistant, associate, auxiliary, backer, beneficiary, candle, champion, clerk, coadjutor, coadjutrix, collaborator, colleague, complice, confederate, confidant, confrere, cooperator, court, criminal, devisee, dupe, ego, entertainment, estate, fact, feoffee, for.