1. KONSTANTINOS EMPEROR¹ OF ANGELOS of Constantinople, Constantinople, Turkey was born circa 1085, and died between July 1166 and 1195. He married in Constantinople, Constantinople, Turkey, circa 1120, (JM-6) THEODORA KOMNENE of Constantinople, Constantinople, Turkey, daughter of (JM-4) Alexis I, Basileus of the East and (MP-4) Irene (DUCENA), who was born on 15 Jan. 1096.
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ANDRONIKOS DUKAS2 of Constantinople, Constantinople, Turkey, b. circa 1122, d. after 1185; m. (UR-2) EUPHROSYNE KASTAMONITISSA before 1155 of Constantinople, Turkey.

2. ANDRONIKOS DUKAS² ANGELOS (Konstantinos Emperor¹) of Constantinople, Constantinople, Turkey, son of (1) Konstantinos Emperor¹ and (JM-6) Theodora (KOMNENE) ANGELOS, was born circa 1122, and died between 1185 and 1232. He married of Constantinople, Turkey, before 1155, (UR-2) EUPHROSYNE KASTAMONITISSA of Constantinople, Constantinople, Turkey, daughter of (UR-1) Theodoros KASTAMONITES, who was born circa 1125, and died after 1195.
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ISAAC II EMPEROR3 BYZANTINE EMPIRE of Constantinople, Constantinople, Turkey, b. circa 1155, d. before 12 April 1204 in Constantinople, Constantinople, Turkey.

3. ISAAC II EMPEROR³ BYZANTINE EMPIRE (Andronikos Dukas ANGELOS², Konstantinos Emperor¹) of Constantinople, Constantinople, Turkey, son of (2) Andronikos Dukas² and (UR-2) Euphrosyne (KASTAMONITISSA) ANGELOS, was born circa 1155, and died before 1 Jan. in Constantinople, Constantinople, Turkey. ^[2]
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IRINI MARIA4 ANGELINA, EMPRESS OF GERMANY of Constantinople, Constantinople, Turkey, b. in 1184, d. on 27 Aug. 1208; m. (GV-6) EMPEROR PHILLIP II OF GERMANY in 1196.

4. IRINI MARIA⁴ ANGELINA, EMPRESS OF GERMANY (Isaac II Emperor BYZANTINE EMPIRE³, Andronikos Dukas ANGELOS², Konstantinos Emperor¹) of Constantinople, Constantinople, Turkey, daughter of (3) Isaac II Emperor³ BYZANTINE EMPIRE, was born in 1184, and died on 27 Aug. 1208. She married in 1196, (GV-6) EMPEROR PHILLIP II OF GERMANY of SWABIA, Germany, son of (GV-4) Friedrich III "Barbarossa" and (TZ-19) Beatrix, Empress (of HOLY ROMAN EMPIRE) HOLY ROMAN EMPIRE, who was born in 1177/81, and died on 21 June 1208 in Bamberg, Germany. ^{[1, 3]}
Child: See (GV-6) Emperor Phillip II of GERMANY