Analysis of information sources in references of the Wikipedia article "Concierge" in English language version.
Il y avait, comme on sait, outre le comte des Cierges un comte des Etables; par contraction on a fait de ces deux titres ceux de connétable et de concierge. (There was, as we know, in addition to the count of Candles a count of Stables; by contraction of these two titles was made those of constable and concierge.)
French, from Old French, probably from Vulgar Latin *conservius, alteration of Latin conservus fellow slave, from com- + servus slave
French concierge, in Old French cumcerges, concerge, -ciarge, -sirge, -sierge, -cherge, whence medieval Latin consergius (in text of 1106): derivation unknown.
