The record of the synod of 2 Mar 1166 records the presence of “...patruele...regis nato ex...patruo...regis, pansebasto...domino Constantino Angelo, domino...Joanne Duca; fratre eiusdem...nepote...regis domino Andronico Duca...”. The record of the synod of 6 Mar 1166 records the presence of “...patruelibus...nostri regis filiis...patrui...eius pansebasti...domini Constantini Angeli, domino Joanne, domino Alexio, domino Andronico, domino Isaacio...”.
A military leader in Asia Minor 1176/83. Niketas Choniates names "Angeli Constantini duo filii Iohannes et Andronicus...Macroducas Constantinus et Lapartas Andronicus" among those who witnessed the defeat at Myriokephalon, dated to 17 Sep 1176. 1
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