▁her ▁mother ▁died ▁having ▁recon ci led ▁with ▁her ▁children ▁– ▁the ▁Cont i ▁family ▁had ▁been ▁est r anged ▁from ▁their ▁mother ▁due ▁to ▁their ▁father ' s ▁behaviour . ▁It ▁was ▁around ▁this ▁time ▁that ▁she ▁purchased ▁the ▁H ôtel ▁de ▁Lau z un ▁on ▁the ▁qu ai ▁M ala qu ais ▁from ▁the ▁wid ow ▁of ▁the ▁Duke ▁de ▁Lau z un . ▁At ▁that ▁time ▁it ▁became ▁known ▁as ▁H ôtel ▁de ▁La ▁Ro che - sur - Y on ▁and ▁is ▁shown ▁with ▁this ▁name ▁on ▁the ▁ 1 7 3 9 ▁T urg ot ▁map ▁of ▁Paris . ▁ ▁Having ▁out l ived ▁all ▁her ▁sib lings ▁and ▁parents , ▁Made mo is elle ▁de ▁La ▁Ro che - sur - Y on ▁died ▁in ▁Paris ▁at ▁the ▁age ▁of ▁ 5 4 . ▁She ▁was ▁buried ▁at ▁the ▁Car mel ▁du ▁fa ub ourg ▁Saint - Jac ques , ▁in ▁the ▁capital . ▁ ▁René ▁Louis , ▁Mar quis ▁d ' Arg enson ▁noted ▁in ▁his ▁mem oir s : ▁" M ade mo is elle ▁de ▁la ▁Ro che - sur - Y on ▁died ▁last ▁night ▁of ▁the ▁small po x . ▁She ▁was ▁a ▁good ▁prin cess , ▁and ▁left ▁many ▁bast ards ." ▁ ▁Tit les ▁and ▁styles ▁ 2 ▁November ▁ 1 6 9 6 ▁– ▁ 2 0 ▁November ▁ 1 7 5 0 : ▁Her ▁Ser ene ▁High ness ▁Made mo is elle ▁de ▁La ▁Ro che - sur