Ahmose III, the last Pharaoh of 26th dynasty?!

We know Psamtik III: http://en.wikipedia.org/wiki/Psamtik_III was the last Pharaoh of the Twenty-sixth Dynasty of Egypt from 526 BC to 525 BC, but according to Herodotus, he had a son named Amasis (Ahmose), it can be interesting that during the reign of Darius the Great (550 - 486 BC), some Egyptians who worked at Persepolis, considered him as their king, of course there can be another story:

 

Seals with Egyptian Hieroglyphic Inscriptions at Persepolis: http://www.achemenet.com/document/2010.002-Garrison&Ritner.pdf

 

How one explains the Egyptian royal-name inscription on PFUTS 0136* within a Persepolitan context is more perplexing, given what we know of the use of other royal-name seals (specifically those that carry Darius’ or Xerxes’ names) at Persepolis.46 In the end, it may simply have been the presence of the inscription within a cartouche that added value to the design rather than the name within it (and certainly few if anyone at Persepolis could have read the inscription). Nevertheless, as the long-lived, penultimate king of an independent Egypt (570–526 BC), and, moreover, coming from a period of intense Persian involvement in Egypt, perhaps the inscriptions of Ahmose were known to Persepolitan administrators of some pretension.47 Herodotus (III.1) provides a tantalizing and, alas, confusing account about the relations between Cyrus/ Cambyses and Ahmose, one involving a dispute over a daughter of Ahmose. The importance of the story is not the specific details, but its reminder that there most certainly would have been diplomatic relationships between Cyrus/Cambyses and Ahmose.48 The cartouche on PFUTS 0136* may be a tantalizing bit of evidence that harkens back to those relationships.