About Nactabaeus, Pharaoh of Egypt
Another thought about Nactabaeus.... (Covers the other options names for Scota's father's name - same person, although the names are very different depending on the source):
Scota was the daughter of Egyptian Pharaoh Smenkhkare. Smenkhkare was known by several other names and spellings of his own name. These include Smenkhkara, Smenkhkaron, Achencheres or Akenkeres (the Greek form, used in Manetho’s Egyptian King List), Cencheres (the version used by the Christian church-father Eusebius), and Cinciris or Cingeris (from early Gaelic history).