iden ▁name ▁and ▁the ▁first ▁name ▁of ▁her ▁daughter , ▁who ▁had ▁died ▁when ▁she ▁was ▁eleven ▁days ▁old . ▁ ▁Stevens on ' s ▁business ▁was ▁taken ▁over ▁by ▁his ▁wid ow , ▁Mary , ▁and ▁his ▁son , ▁the ▁third ▁David ▁Stevens on ▁in ▁the ▁family . ▁It ▁became ▁a ▁limited ▁company ▁( David ▁Stevens on ▁( Be ers ▁and ▁Min er als ) ▁Limited ) ▁on ▁ 1 ▁July ▁ 1 9 5 0 ; ▁the ▁family ▁sold ▁their ▁shares ▁in ▁ 1 9 5 6 . ▁The ▁Glen ▁Lane ▁manufact uring ▁plant ▁was ▁demol ished ▁in ▁the ▁ 1 9 6 0 s . ▁ ▁The ▁Well me adow ▁C afé , ▁where ▁the ▁sn ail ▁had ▁been ▁found , ▁closed ▁around ▁ 1 9 3 1 ; ▁the ▁building ▁was ▁demol ished ▁in ▁ 1 9 5 9 . ▁M ing h ella , ▁its ▁owner , ▁subsequently ▁became ▁a ▁labour er ; ▁he ▁died ▁on ▁ 2 0 ▁March ▁ 1 9 7 0 . ▁ ▁Sign ific ance ▁Lord ▁At kin ' s ▁neighbour ▁principle , ▁that ▁people ▁must ▁take ▁reasonable ▁care ▁not ▁to ▁inj ure ▁others ▁who ▁could ▁for ese e ably ▁be ▁affected ▁by ▁their ▁action ▁or ▁in action , ▁was ▁a ▁response ▁to ▁a ▁question ▁a ▁lawyer ▁pos ed . ▁ ▁The ▁neighbour ▁principle ▁itself ▁was ▁first ▁mentioned ▁in ▁relation ▁to ▁law ▁by ▁Francis ▁Bull er ▁in ▁An ▁Introduction ▁to ▁the ▁Law ▁relative ▁to ▁Tri als ▁at ▁N isi ▁Pri us , ▁which