ul ph ▁of ▁Lob bes , ▁made ▁Lob bes ▁the ▁most ▁important ▁monaster y ▁in ▁Belg ium ▁of ▁the ▁time . ▁Under ▁An son , ▁the ▁ 6 th ▁ab bot ▁( 7 7 6 - 8 0 0 ), ▁the ▁ab bey ▁school ▁rose ▁to ▁great ▁fame . ▁▁ ▁In ▁ 8 6 4 ▁H uc bert , ▁brother - in - law ▁of ▁L oth air ▁II ▁of ▁L oth aring ia , ▁became ▁lay ▁ab bot . ▁Through ▁his ▁dec ad ent ▁l ifest yle ▁he ▁almost ▁brought ▁the ▁monaster y ▁to ▁dest itution . ▁His ▁successor , ▁Franco , ▁was ▁both ▁ab bot ▁of ▁Lob bes ▁and ▁bishop ▁of ▁Li ège , ▁a ▁situation ▁that ▁continued ▁until ▁ 9 6 0 . ▁The ▁ab bey ▁basically ▁became ▁a ▁f ief ▁of ▁the ▁Bishop ▁of ▁Li ège , ▁although ▁ecc les iast ically ▁it ▁was ▁situated ▁in ▁the ▁bishop ric ▁of ▁Camb rai . ▁▁ ▁In ▁ 9 5 4 ▁the ▁ab bey ▁was ▁ra ided ▁and ▁burn ed ▁during ▁the ▁Hung arian ▁invas ions ▁of ▁Europe . ▁ ▁Under ▁the ▁abb ots ▁Fol cu in ▁( 9 6 5 - 9 9 0 ), ▁Her iger ▁of ▁Lob bes ▁( 9 9 0 - 1 0 0 7 ) ▁and ▁Hugo ▁( 1 0 3 3 – 1 0 5 3 ), ▁the ▁ab bey ▁and ▁the ▁school ▁once ▁again ▁att ained ▁a ▁great ▁reputation . ▁ ▁Dec line ▁After ▁this ▁period ▁the ▁fame ▁of ▁the ▁ab bey ▁gradually