your 'Beleg' appears to be a quotation from Shakespeare (would have been nice if you'd confirmed that).
M-w.com has the meaning of ancient:
alteration of ensign
1 archaic : ENSIGN, STANDARD, FLAG
2 obsolete : the bearer of an ensignhttp://www.m-w.com/cgi-bin/dictionary
which indicates that this might be what is meant.
on the other hand, ancient is occasionally used to refer to 'old trustworthy friends' which makes it difficult to decide exactly which is meant.
in this case I'd argue strongly for 'ensign' which is the 'standard-bearer' or Fähnrich.
supported if flagged [obs.] (just as Fähnrich itself already is in LEO: Dictionary: ensign