[L’abbaye] renforce le site après les invasions de l’ Angleterre par Robert l° d’Ecosse entre 1316 et 1322 .7
[the abbey] strengthens the place after the.PL invasion.PL of the England by Robert the First of Scotland between 1316 and 1322 . 
[The abbey] strengthens the place after the invasions of England by Robert the First of Scotland between 1316 and 1322.