Commentary
Weis places her father as Leo Phokas, which is apparently either her brother or her maternal grandfather.
Cawley: "A document entitled Luitprandi Legatio ad Nicephorum Phocam records Luitprand's mission on behalf of Emperor Otto I to negotiate a marriage between "filiam Romani imperatoris et Theophanæ imperatricis" and "domino meo filio suo Ottoni Imperatori Augusto". Her name is not given in the document. It is unlikely, given the date of the marriage of Emperor Nikeforos Fokas and Theofano (in 963) that any daughter of theirs would have been considered marriageable in the late 960s by Emperor Otto. It is therefore likely that the document was prepared before Luitprand's visit, in ignorance of the details of the emperor's family members. The identity of the proposed bride is therefore not certain. Prior to Luitprand's arrival in Constantinople, Emperor Nikeforos was murdered. According to Thietmar, his successor Emperor Ioannes Tzimiskes sent his niece Theofano back to Germany "not the desired maiden…accompanied by a splendid entourage and magnificent gifts". Western sources consistently refer to Theofano as "neptis" of Emperor Ioannes Tzimiskes, for example the charter dated 14 Apr 972 under which "Otto…imperator augustus" granted property to "Theophanu, Iohannis Constantinopolitani imperatoris neptim". Her exact relationship to Emperor Ioannes Tzimiskes is unknown. It is possible that she was a relative of the emperor's wife rather than of the emperor himself. Davids suggests that she was the daughter of Konstantinos Skleros (brother of the first wife of Emperor Ioannes) and his wife Sofia. An indication that this may be correct is that Theofano's second daughter was named Sophie, normal Byzantine practice being to name the first daughter after the paternal grandmother and the second after the maternal grandmother. It also appears to be chronologically sustainable. However, too little is known about the families of Emperor Ioannes and his wife to propose this as the only plausible hypothesis, especially as the word "neptis" could cover a wide variety of relationships. In addition, it cannot even be assumed that the wife of Konstantinos Skleros was the only individual named Sofia in these families at the time."
Family
ClaimDetailEvidence
SpouseOtto II, King of Germany (955-983) 
Child +Matilda of Saxony (978-1024) [S756] [S924]
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Attributes
ClaimDetailEvidence
GenderFemale
NameTheofano [S924]
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NameTheophana [S756]
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Timeline
ClaimDateDetailAgeEvidence
Birth 955 - 959Turkey [S756] [S924]
Cawley: 955/60, Weis: 956/58
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MarriageApr 14, 972Otto II, King of Germany (955-983), Rome, Metropolitan City of Rome, Lazio, Italy [S756] [S924] [S924]
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DeathJun 15, 991Nijmegen, Turkey [S756] [S924]
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Sources
IndexTitle
[S756] Weis, Frederick Lewis, "Ancestral Roots of Sixty Colonists Who Came To New England before 1700, 7th Ed." (Genealogical Publishing Co., Inc., Baltimore, 1999).
[S924] Cawley, Charles, "Foundation of Medieval Genealogy (Medieval Lands - Germany Kings)" (2006-7 (v1.1 Updated 26 August 2006)) (https://fmg.ac/Projects/MedLands/GERMANY, Kings.htm).