Because he was the brother of Alexios, we can deduce the names of some of his relatives: Their father was Manuel Komnenos, and their grandfather Byzantine Emperor Andronikos I. Their relative Tamar was queen of Georgia; exactly how David and Tamar were related is not clear.
Karena ia adalah saudara Alexios, kami dapat menyimpulkan nama-nama beberapa kerabatnya: Ayah mereka adalah Manuel Komnenos, dan kakek mereka Kaisar Bizantium Andronikos I. Kerabat mereka Tamar adalah ratu Georgia; bagaimana persisnya hubungan David dan Tamar tidak jelas.