8 6 7 , ▁Zürich ▁- ▁ 1 ▁May ▁ 1 9 0 9 , ▁C annes ). ▁ ▁Louis ▁had ▁one ▁il leg it imate ▁son , ▁Charles ▁of ▁D uzz io ▁( 1 8 6 9 - 1 9 3 1 ). ▁ ▁Princess ▁Maria ▁Ter esa ▁married ▁Prince ▁Wilhelm ▁of ▁H oh enz oll ern - S ig mar ingen ▁on ▁ 2 7 ▁June ▁ 1 8 8 9 ▁and ▁later ▁became ▁the ▁Princess ▁of ▁H oh enz oll ern ▁when ▁her ▁father - in - law ▁died ▁in ▁ 1 9 0 5 . ▁She ▁had ▁two ▁sons ▁and ▁a ▁daughter . ▁ ▁Death ▁Louis ▁died ▁of ▁heart ▁disease ▁in ▁Paris ▁on ▁ 8 ▁June ▁ 1 8 8 6 . ▁ ▁Some ▁sources ▁claim ▁that ▁Louis ▁had ▁in ▁fact ▁died ▁in ▁ 1 8 7 8 : ▁his ▁mind ▁cloud ed ▁by ▁alco hol ▁and ▁tort ured ▁by ▁the ▁knowledge ▁that ▁his ▁life ▁was ▁ru ined , ▁he ▁threw ▁himself ▁into ▁Lake ▁Zug , ▁near ▁Zürich . ▁These ▁sources ▁claim ▁that ▁it ▁would ▁have ▁been ▁sc and alous ▁if ▁it ▁had ▁been ▁revealed ▁that ▁the ▁brother - in - law ▁of ▁the ▁Emperor ▁Franz ▁Joseph ▁I ▁of ▁Austria ▁had ▁committed ▁suic ide . ▁ ▁Tit les , ▁styles , ▁hon ours ▁and ▁arms ▁ ▁Tit les ▁and ▁styles ▁ 1 ▁August ▁ 1 8 3 8 ▁– ▁ 8 ▁June ▁ 1 8 8 6 : ▁His ▁Royal ▁High ness ▁The ▁Count ▁of ▁T ran i ▁