http://fmg.ac/Projects/MedLands/BYZANTINE%20NOBILITY.htm#_Toc204583743

Chapter 31. SYNADENOS

• 4. THEODOULOS Synadenos. A seal dated to [1065] names "Theodoulos Synadenos, vestarches"[519]. m --- Botaneiatissa, sister of Emperor NIKEFOROS III, daughter of --- Botaneiates & his wife ---.
  • a) --- Synadene. m ([1066/75]%29 as his second wife, GÉZA of Hungary, son of BÉLA I King of Hungary & his wife Ryksa of Poland ([1044/45]-25 Apr 1077)
  • b) [NIKEFOROS Synadenos (-killed in battle Durazzo 18 Oct 1081). The Alexeiad names "a certain Synadenos of Levantine origin…a family relative of Nikeforos" when recording that Emperor Nikeforos Botaneiates planned to name him as his successor, but does not specify the precise relationship[527]. If, as indicated above, the wife of Theodoulos Synadenos was the sister of Emperor Nikeforos, it is likely that he was the father of Nikeforos Synadenos, although this is not without all doubt. The Alexeiad records the death of "Nikeforos surnamed Synadenos" fighting Robert "Guiscard" Duke of Apulia in Durazzo in 1081[528]. Betrothed to ZOE porphyrogeneta Doukaina, daughter of Emperor KONSTANTINOS X & his second wife Evdokia Makrembolitissa (1062-before 1136).]