Helen Monamachos

-http://fmg.ac/Projects/MedLands/BYZANTIUM.htm#SklerainaMKonstantino...

a) daughter (-before 1034). Psellos records the second marriage of Konstantinos, arranged by Romanos Argyros before he became emperor, to "the daughter of his sister Pulcheria, who in the past had been married to Basil Sclerus", stating that she was her parents' only child[1459]. Zonaras records that, after the death of his first wife, Konstantinos married "imperatoris Romani nepte ex fratre"[1460]. According to Psellos, she died before her husband's exile to Lesbos[1461].

m (before 1025) as his second wife, KONSTANTINOS Monomachos, son of THEODOSIOS Monomachos & his wife --- ([1005/10]-11 Jan 1055, bur Monastery of Mangana). He succeeded in 1042 as Emperor KONSTANTINOS IX.

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This would seem to be different from the mistress by whom he had the illegitimate daughter who married Prince Vsevolod I st Kiev:

Mistress (1): MARIA [Skleraina], daughter of --- (-[1044], bur Monastery of Mangana[1667]). Zonaras records that, after the death of his second wife, Konstantinos was unable to marry a third time but took as his mistress "consobrina uxoris suæ…adulescentula…et nobili Sclerorum familia orta"[1668]. Psellos records that "the niece of his late wife" became mistress of Konstantinos Monomakhos, the future Emperor Konstantinos IX, after the death of his second wife, being unable to marry her because of the Orthodox church's prohibition of third marriages[1669]. As Psellos, in an earlier passage, records that the second wife of Konstantinos was her parents' only child[1670],

https://fr.m.wikipedia.org/wiki/Constantin_IX#Unions_et_post%C3%A9r...

Widower, he remarried with Pulchérie Sklèros , daughter of Basile Sklèros , blinded and exiled in 1033 , and by his mother Pulchéria Argyropoulina, maternal niece of the Roman emperor III Argyre , deceased before 1034 , who is undoubtedly the mother of his only daughter:

• Probably named Marie, but sometimes known as Irene or Anne, she died in 1067 . She married in 1046 Prince Vsevolod I st Kiev , Grand Duke of Kiev , following the peace agreement between the Kievan Rus and Empire [ 96 ] , [ 97 ] .

References

• Byzantine Empresses: Women and Power in Byzantium AD 527-1204. By Lynda Garland. Page 151. GoogleBooks