▁to ▁be ▁used ▁for ▁p ump ing ▁water ▁under ▁the ▁C ly de ▁at ▁Glasgow . ▁ ▁He ▁and ▁his ▁second ▁wife ▁travel led ▁to ▁France ▁and ▁Germany , ▁and ▁he ▁purchased ▁an ▁estate ▁in ▁mid - W ales ▁at ▁D old ow l od ▁House , ▁one ▁mile ▁south ▁of ▁L lan wr th w l , ▁which ▁he ▁much ▁improved . ▁ ▁In ▁ 1 8 1 6 ▁he ▁took ▁a ▁trip ▁on ▁the ▁p addle - ste amer ▁Com et , ▁a ▁product ▁of ▁his ▁invent ions , ▁to ▁revis it ▁his ▁home ▁town ▁of ▁Green ock . ▁ ▁He ▁died ▁on ▁ 2 5 ▁August ▁ 1 8 1 9 ▁at ▁his ▁home ▁" He ath field ▁Hall " ▁near ▁Hand sw orth ▁in ▁Staff ord shire ▁( now ▁part ▁of ▁B irmingham ) ▁at ▁the ▁age ▁of ▁ 8 3 . ▁He ▁was ▁buried ▁on ▁ 2 ▁September ▁in ▁the ▁gra vey ard ▁of ▁St ▁Mary ' s ▁Church , ▁Hand sw orth . ▁The ▁church ▁has ▁since ▁been ▁extended ▁and ▁his ▁grave ▁is ▁now ▁inside ▁the ▁church . ▁ ▁Family ▁ ▁On ▁ 1 6 ▁July ▁ 1 7 6 4 ▁married ▁his ▁cousin ▁Margaret ▁Miller ▁( d . ▁ 1 7 7 3 ). ▁They ▁had ▁two ▁children , ▁Margaret ▁( 1 7 6 7 – 1 7 9 6 ) ▁and ▁James ▁( 1 7 6 9 – 1 8 4 8 ). ▁In ▁ 1 7 9 1 ▁their ▁daughter ▁married ▁James ▁Miller ;