▁Frederick ▁I ▁against ▁Henry ▁the ▁Lion . ▁ ▁Between ▁ 1 1 8 3 ▁and ▁ 1 1 8 5 , ▁he ▁fought ▁a ▁war ▁against ▁his ▁cousin ▁Henry ▁Bor win ▁I . ▁ ▁Nicholas ▁received ▁support ▁from ▁the ▁Dan es ; ▁Henry ▁Bor win ▁I ▁received ▁no ▁outside ▁support . ▁ ▁King ▁Can ute ▁VI ▁of ▁Den mark ▁noticed ▁this ▁lack ▁of ▁support ▁and ▁used ▁the ▁opportunity ▁to ▁strength en ▁his ▁position ▁on ▁the ▁Balt ic ▁Sea ▁coast . ▁ ▁In ▁ 1 1 8 5 , ▁Nicholas ▁I ▁and ▁Henry ▁Bor win ▁I ▁had ▁to ▁accept ▁Can ute ▁VI ▁as ▁their ▁lie ge ▁lord . ▁ ▁In ▁return , ▁Can ute ▁en fe off ed ▁Nicholas ▁I ▁with ▁the ▁Lord ship ▁of ▁Rost ock . ▁ ▁On ▁ 2 5 ▁May ▁ 1 2 0 0 , ▁Nicholas ▁I ▁and ▁Henry ▁Bor win ▁fought ▁the ▁Battle ▁of ▁Was ch ow , ▁as ▁part ▁of ▁a ▁war ▁against ▁Count ▁Adolf ▁III ▁of ▁Hol stein . ▁ ▁The ▁Me ck len burg ▁side ▁won , ▁and ▁secured ▁the ▁area ▁that ▁is ▁now ▁south western ▁Me ck len burg . ▁ ▁However , ▁Nicholas ▁I ▁fell ▁in ▁this ▁battle . ▁ ▁External ▁links ▁▁ ▁Gene al ogy ▁of ▁the ▁House ▁of ▁Me ck len burg ▁ ▁Category : L ords ▁of ▁Me ck len burg ▁Category : L ords ▁of ▁Rost ock ▁Category : H ouse ▁of ▁Me ck len burg ▁Category : 1 2 th - century ▁birth s ▁Category : 1 2