From Tar Valon Library
Author: Atarah al'Norahn
Shiota was one of the nations of the Free Era. It was located in the southern part of the Westlands. To the north was Aldeshar, with Nerevan to the northeast, Esandara to the east, Fergansea to the southeast, the Sea of Storms to the south, Dhowlan to the west, and Farashelle to the northwest. Eventually, this area of land became what is now Altara.
By FY 943, Amalasan had conquered Shiota, among other nations.
By FY 963, Shiota had fallen to Hawkwing.
Throughout the series, there are several mentions of Shiota.
Elayne, Nynaeve and company ride past a statue of a Shiotan Queen as they ride to the Kin's farm. Apparently, records claim that now-worn statue had worn little but armor, and Elayne is aghast to hear this (TPoD, Ch. 3).
Rand and Bashere ride past a statue of what was probably a Shiotan Queen. Among the remnants of the statue is the head, wearing a crown of up-thrusting daggers. Bashere says that he recalls that Shiotans gave crowns like that to rulers who expanded Shiota's borders (TPoD, Ch. 22).
(References: Where not marked, information is taken from "The World of Robert Jordan's 'The Wheel of Time'")