What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
A Count Palatine, especially the Count Palatine of the Rhine.
Early 17th century; earliest use found in Thomas Coryate (?1577–1617), traveller and writer. From early modern German pfaltzgraf, pfaltzgrave, pfalzgraf, German Pfalzgraf.