 Henry Frederick, Hereditary Prince of the Palatinate

Henry Frederick, Electoral Prince of the Palatinate, (; 1 January 1614 – 7 January 1629 in the Netherlands) was the eldest son of Frederick V, the Winter King, and his wife, Elizabeth Stuart, daughter of King James VI of Scotland and I of England.As soon as the prince was born, Elizabeth ordered "pieces" using the English word, meaning the firing of cannon to celebrate the birth.