= Count Palatine. Also occasionally = earl palatine.
Frederick V of Bohemia (1596–1632), Elector Palatine, who in 1613 married Elizabeth, daughter of James I and Anne of Denmark, was also sometimes called Prince Palatine, as was his son Rupert (1619–82)..
Origin
Late 16th century; earliest use found in George Baker (1540–1612), surgeon.