An official who dispensed Alms for some other person or institution, e.g. the king and queen each had an almoner, as would a religious house; an alms-giver. Robert Mannyng (c.1330) uses aumenere in Handlyng Synne: 'Seynt John, the aumenere'. [< AnNor. aulmoner = an almoner < Lat. eleemosyna = alms]
Dictionary of Medieval Terms and Phrases. Christopher Coredon with Ann Williams.