been > [were] uprear > raise
2 Their beavers bright, each other to greet;
beaver > visor (strictly, the lower part of the face-guard)
3 Goodly comportance each to other bear,
comportance > behaviour; accordance
4 And entertain themselves with courtesies meet.
meet > fitting
5 Then said the Redcross Knight, "Now might I weet,
weet > know
6 Sir Guyon, why with so fierce salience