Catherine Parr^[a] (c. July or August 1512^[2] – 5 September 1548) was Queen of England and Ireland as the last of the six wives of King Henry VIII from their marriage on 12 July 1543 until Henry's death on 28 January 1547. Catherine was the final queen consort of the House of Tudor, and outlived Henry by a year and eight months. With four husbands, she is the most-married English queen. She was the first woman to publish in print an original work under her own name in England in the English language.^[b][4]

Catherine enjoyed a close relationship with Henry's three children, Mary, Elizabeth and Edward. She was personally involved in the education of Elizabeth and Edward. She was influential in Henry's passing of the Third Succession Act in 1543 that restored his daughters Mary and Elizabeth to the line of succession to the throne.^[5] Catherine was appointed regent from July to September 1544 while Henry was on a military campaign in France; in the event that he lost his life, she was to rule as regent until Edward came of age. However, he did not give her any function in government in his will. Following the King's death, she assumed the role of guardian to her stepdaughter Elizabeth, and took Henry's great-niece Lady Jane Grey into her household.

On 25 April 1544, Catherine published her first book, Psalms or Prayers, anonymously.^[6] Her book Prayers or Meditations became the first original book published by an English queen under her own name on 2 June 1545. She published a third book, The Lamentation of a Sinner, on 5 November 1547, nine months after the death of King Henry VIII. On account of her Protestant sympathies, she provoked the enmity of anti-Protestant officials, who sought to turn the King against her; a warrant for her arrest was drawn up, probably in the spring of 1546.^[7] However, she and the king soon reconciled.