1) In the document fixing the marrige of Witold Remigiusz Giedroyć his father is pointed out as Jan Boguslaw Giedroyc and the mother
as Helen (the maiden name Vysotskii). As we see from the document he was born either in 1859 or in 1860.
Thus the date of his birth 1851 may be incorrect in case we speak about the same person.
This point should be clarified.
2) Is it known who was the mother of his brothers? To our knowledge Helen (Vysotskii) had two daughters and one son.
3) to our knowledge Jan Boguslaw Giedroyc had also another daughter Stanislawa which was born in 1851
