Adontz speculated that the family may have had Armenian origins. Dalasseni served as governors of Antioch in the late tenth and eleventh centuries, and were prominent in the military in the Balkans in the 1060s and 1070s, being stationed as commanders at Thessalonica, Serres and Skopje. Such was the family's standing that Constantine Dalassenus (governor of Antioch in 1025) on two separate occasions in 1028 and in 1041 nearly acquired the throne after twice being short-listed as a candidate for marrying the much-married empress Zoe
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