Ladislaus I (king of Poland)
Ladislaus I, 1260–1333, duke (1306–20) and later king (1320–33) of Poland; called Ladislaus the Short. He restored the Polish kingdom, which had been partitioned since 1138 (see Piast). In his conflict with Brandenburg over Danzig and Pomerania, he invoked the aid of the Teutonic Knights, who instead proceeded to take the territories for themselves. His son and successor was Casimir III.
"Ladislaus I (king of Poland)." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (March 22, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/ladislaus-i-king-poland
"Ladislaus I (king of Poland)." The Columbia Encyclopedia, 6th ed.. . Retrieved March 22, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/ladislaus-i-king-poland