Here is what the author had to say about the name lists: The Avestan names all occur in the Avesta itself, and thus can be dated to around 1000 BCE or earlier. The Old Persian inscriptions are from around 500-600 BCE. The Parsi names are from Dosabhai Framji Karaka, History of the Parsis I, London 1884. pp. 162-3, and are names in use at that time. The Zoroastrian Irani names are from Farhang-e Behdinan, by Jamshid Sorush Sorushian, Tehran, 1956, and are names used in Kerman and Yazd at that time. You will find many of the names in current usage in the Pahlavi texts as well (ca. 9th ce CE), and in fact date to ancient times, e.g. Av. manush-chithra -> Pahl. Minochehr -> modern menucher. If you consider 9th ce[ntury] CE as medieval, I would suggest looking through the Pahlavi texts for more names.
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