He is recorded among the deceased in the obituary of the Typikon of the Pantokrator monastery (October, 1136)
Pantokrator Typikon 229
His death plunged his mother Anna 61 into mourning; as a result, his teenage brother Alexios 1 was prevented from joining the Mantzikert campaign, in order to console her
Anna Komnene 11.10-20
While on campaign in Bithynia he contracted an ear-ache and died