Theodora Komnene was a Byzantine

Byzantine

Byzantine usually refers to the Roman Empire during the Middle Ages.Byzantine may also refer to:* A citizen of the Byzantine Empire, or native Greek during the Middle Ages...

 noblewoman, being the fourth daughter of Emperor Alexios I Komnenos

Alexios I Komnenos

Alexios I Komnenos, Latinized as Alexius I Comnenus , was Byzantine emperor from 1081 to 1118, and although he was not the founder of the Komnenian dynasty, it was during his reign that the Komnenos family came to full power. The title 'Nobilissimus' was given to senior army commanders,...

 and Irene Doukaina

Irene Doukaina

Irene Doukaina or Ducaena was the wife of the Byzantine emperor Alexios I Komnenos, and the mother of the emperor John II Komnenos and of the historian Anna Komnene.-Succession of Alexios and Irene:...

. She married Konstantinos Angelos, Admiral of Sicily

Sicily

Sicily is a region of Italy, and is the largest island in the Mediterranean Sea. Along with the surrounding minor islands, it constitutes an autonomous region of Italy, the Regione Autonoma Siciliana Sicily has a rich and unique culture, especially with regard to the arts, music, literature,...

 by whom she had seven children. Byzantine emperors Alexios III Angelos

Alexios III Angelos

Alexios III Angelos was Byzantine Emperor from 1195 to 1203.- Early life:Alexios III Angelos was the second son of Andronikos Angelos and Euphrosyne Kastamonitissa. Andronicus was himself a son of Theodora Komnene, the youngest daughter of Emperor Alexios I Komnenos and Irene Doukaina. Thus...

 and Isaac II Angelos

Isaac II Angelos

Isaac II Angelos was Byzantine emperor from 1185 to 1195, and again from 1203 to 1204....

 were her grandsons, thereby making her an ancestress of the Angelos dynasty.

Family

Theodora was born in Constantinople

Constantinople

Constantinople was the capital of the Roman, Eastern Roman, Byzantine, Latin, and Ottoman Empires. Throughout most of the Middle Ages, Constantinople was Europe's largest and wealthiest city.-Names:...

 on 15 January 1096, the fourth of the five daughters of Emperor Alexios I Komnenos and Irene Doukaina. She had a total of eight siblings; among these were Emperor John II Komnenos

John II Komnenos

John II Komnenos was Byzantine Emperor from 1118 to 1143. Also known as Kaloïōannēs , he was the eldest son of Emperor Alexios I Komnenos and Irene Doukaina...

, and historian Anna Komnene

Anna Komnene

Anna Komnene, Latinized as Comnena was a Greek princess and scholar and the daughter of Emperor Alexios I Komnenos of Byzantium and Irene Doukaina...

. Her paternal grandparents were Ioannis Komnenos and Anna Dalassena

Anna Dalassena

Anna Dalassene was an important Byzantine noblewoman who played a significant role in the rise of the Komnenoi in the eleventh century. As Augusta, a title bestowed upon her rather than the empress by her son, Alexios I Komnenos, she guided the empire during his many absences for long military...

, and her maternal grandparents were Andronikos Doukas and Maria of Bulgaria

Maria of Bulgaria

Maria of Bulgaria , protovestiaria, was the wife of protovestiarios Andronikos Doukas and mother of Irene Doukaina.-Life:...

.

Marriage and issue

Theodora married Konstantinos Angelos (c.1085- after July 1166) sometime before 1120. He was the son of Manolis Angelos, and a military commander of Emperor Manuel I

Manuel I Komnenos

Manuel I Komnenos was a Byzantine Emperor of the 12th century who reigned over a crucial turning point in the history of Byzantium and the Mediterranean....

 and would later in 1145 become the commander of the Imperial fleet in Sicily. Byzantine historian Niketas Choniates names Theodoram Alexii avi Manuelis filiam as the wife of Constantium Angelum. Together Konstantinos and Theodora had seven recorded children, although there were possibly eight children born to the couple:

• John Doukas
  John Doukas
  John Doukas or Ducas , was the eldest son of Constantine Angelos by Theodora Komnene, the seventh child of the Byzantine Emperor Alexios I Komnenos and Irene Doukaina, from whose family name John Doukas took his own.-Career:Doukas is first attested in an imperial document in 1166...
  
   (c.1126- 1200), Governor of Epirus, married firstly a lady whose name is unknown by whom he had two sons; married secondly Zoe Doukaina by whom he had three sons.
• Alexios Komnenos Angelos, married and fathered one son.
• Andronikos Dukas Angelos (died after 1185), married Euphrosyne Kastamonitissa, by whom he had nine children including emperors Alexios III Angelos
  Alexios III Angelos
  Alexios III Angelos was Byzantine Emperor from 1195 to 1203.- Early life:Alexios III Angelos was the second son of Andronikos Angelos and Euphrosyne Kastamonitissa. Andronicus was himself a son of Theodora Komnene, the youngest daughter of Emperor Alexios I Komnenos and Irene Doukaina. Thus...
  
   and Isaac II Angelos
  Isaac II Angelos
  Isaac II Angelos was Byzantine emperor from 1185 to 1195, and again from 1203 to 1204....
  
  .
• Isaac Angelos, military Governor of Cilicia
• Maria Angelina, married Konstantinos Kamytzes, by whom she had one daughter.
• Eudokia Angelina, married Basileios Tsykandeles
• Zoe Angelina, married Andronikos Synadenos

Theodora Komnene died on an unknown date. Among her numerous descendants was Irene Angelina

Irene Angelina

Irene Angelina was the daughter of the Byzantine Emperor Isaac II Angelos by his first wife, perhaps named Herina, possibly a member of the Tornikes family.- Marriage and issue :...

, wife of Philip of Swabia

Philip of Swabia

Philip of Swabia was king of Germany and duke of Swabia, the rival of the emperor Otto IV.-Biography:Philip was the fifth and youngest son of Emperor Frederick I and Beatrice I, Countess of Burgundy, daughter of Renaud III, count of Burgundy, and brother of the emperor Henry VI...

; thus Theodora is an ancestress of every royal house in Europe.

Ancestry