Definition of "aidance"

Since sware the Parcæ unto me, their friend, / they shall adore my name, my favour prize; / and, as their feats of armèd prowess shend / all feats of rival Rome, I lief devise / some mode of aidance in what things I may, / far as our force o'er man extendeth sway.

1880, Richard Francis Burton, Os Lusíadas, volume II, page 339

I hoped your aidance in mine every chance[.]

1885, Richard F. Burton, chapter XI, in The Book of the Thousand Nights and a Night, volume I, The Burton Club, page 108