John Doukas - Caesar - died in 1088.
John I Doukas of Thessaly died in 1289.
John Komnenos Doukas died in 1244.
John II Doukas of Thessaly died in 1318.
John III Doukas Vatatzes died on 1254-11-03.
John I Doukas of Thessaly was born in 1240.
John III Doukas Vatatzes was born in 1192.
Konstantios Doukas died in 1082.
Neophytos Doukas died in 1845.
Michael I Komnenos Doukas died in 1215.
Thomas I Komnenos Doukas died in 1318.
Michael VII Doukas died in 1090.
Constantine Doukas of Thessaly died in 1303.