In a former volume it was shown that a Semiramis flourished in Assyria towards the end of the ninth and the beginning of the eighth centuries B.C .-- -during the period, that is, of Babylonian subjection to Assyria.

She may have been a Babylonian princess, and have exercised an authority in the southern capital.

It would seem therefore to be more probable that she is the individual whom Herodotus intends, though he has placed her about half a century too late, than that there were two persons of the same name within so short a time, both queens, and both ruling in Mesopotamia.
Nabonassar was succeeded in the year B.C.733 by a certain Nadius, who is suspected to have been among the independent princes reduced to subjection by Tiglath-Pileser in his Babylonian expedition.

Nadius reigned only two years--from B.C.733 to B.C.

731--when he was succeeded by Ghinzinus and Porus, two princes whose joint rule lasted from B.C.731 to B.C.726.