This lexeme likely represents a reborrowing from ME of the AN puralee with the elision of the medial vowel and an alteration after liu1, however both the ME and AN uses of this word are attested during the same year.
s.
1lawpurlieu, land on the forest border or boundary:
(
1482-83
)
par la licence du Roy ou de sez heirez en sez forestez, chacez ou purlieuz ou saunz licence en la Foreste chase ou purlieu d'autre persone
ii 475
purlieu (1482-83)