The family's stature declined by the mid-12th century, and they subsequently entered the Byzantine civil service. One of these figures, Constantine Basilakes, served as envoy and treasurer "of foreign expenses" in addition to being a soldier. Constantine perished during the Byzantine–Norman wars. According to the modern Byzantinist Alexander Kazhdan, the other known members of the family held low ranks, usually as provincial officials. A certain John Basilakes was nephew of the poet and grammarian John Tzetzes. In the early 13th century, Michael Basilakes served as "logariastes" (a type of financial official) in the area of Miletus. Lastly, a certain Basilakes, who may have held the title of "nomikos" in Mistra , worked as scribe and poet.