▁old ▁at ▁the ▁time ▁of ▁his ▁election , ▁Y ah bal la ha ▁V ▁died ▁in ▁ 1 5 8 0 ▁without ▁having ▁been ▁able ▁to ▁seek ▁confirm ation ▁from ▁Rome . ▁ ▁He le en ▁Mur re - V an ▁den ▁Berg ▁arg ues ▁that ▁Y ah bal la ha ▁was ▁elected ▁in ▁ 1 5 7 7 ▁and ▁died ▁in ▁ 1 5 7 9 . ▁ ▁Both ▁she ▁and ▁David ▁Wil m sh urst ▁hold ▁that , ▁after ▁the ▁death ▁of ▁Abd ish o ▁IV , ▁this ▁Y ah bal la ha , ▁not ▁yet ▁formally ▁elected ▁as ▁Patri arch , ▁or ▁another ▁of ▁the ▁same ▁name ▁acted ▁as ▁patri arch ▁or ▁at ▁least ▁as ▁administrator ▁of ▁the ▁patri arch ate . ▁ ▁S ources ▁▁ ▁He le en ▁H . L . ▁Mur re - V anden berg , ▁The ▁Patri arch s ▁of ▁the ▁Church ▁of ▁the ▁East ▁from ▁the ▁Fif teenth ▁to ▁E igh teenth ▁Cent uries , ▁in ▁Hugo ye : ▁Journal ▁of ▁Sy ri ac ▁Studies , ▁Vol . ▁ 2 . 2 ▁( 1 9 9 9 ▁[ 2 0 1 0 ]), ▁pp . ▁ 2 5 2 - 2 5 3 ▁ ▁Eug ène ▁T isser ant , ▁" N ést or ienne ▁( L ' E glise )", ▁in ▁D iction naire ▁de ▁Thé ologie ▁C athol ique , ▁vol , ▁XI , ▁part ▁ 1 , ▁Paris ▁ 1 9 3 1 , ▁col . ▁ 2 3 0 ▁