Henry of Grosmont, 1st Duke of Lancaster, (c. 1310 – 1361), also Earl of Derby, member of the English nobility
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John of Gaunt, 1st Duke of Lancaster, (1340 – 1399), member of the House of Plantagenet
The event's registered title is named after John of Gaunt, the 1st Duke of Lancaster, who lived in the 14th century.
Katherine Swynford was the longtime mistress and later the third wife of John of Gaunt, third surviving son of Edward III.
The book uses John of Gaunt, 1st Duke of Lancaster as the focus around which he describes the medieval English culture of that time (1340-1399).
Duke University | Duke Ellington | Duke | Lancaster | Duke of Wellington | Avro Lancaster | Prince William, Duke of Cambridge | Louis Mountbatten, 1st Earl Mountbatten of Burma | Horatio Nelson, 1st Viscount Nelson | Duke of York | Herbert Kitchener, 1st Earl Kitchener | Lancaster University | Burt Lancaster | Charles Cornwallis, 1st Marquess Cornwallis | Lancaster, Pennsylvania | 1st United States Congress | Frederick Roberts, 1st Earl Roberts | Duke of Norfolk | Bernard Montgomery, 1st Viscount Montgomery of Alamein | Duke of Edinburgh | Duke of Burgundy | William Cecil, 1st Baron Burghley | House of Lancaster | Robert Harley, 1st Earl of Oxford and Earl Mortimer | Prince Arthur, Duke of Connaught and Strathearn | George Villiers, 1st Duke of Buckingham | Prince Andrew, Duke of York | Thomas Wentworth, 1st Earl of Strafford | Duke of Northumberland | Alfred, Duke of Saxe-Coburg and Gotha |
Philippa of Lancaster, the eldest daughter of John of Gaunt, 1st Duke of Lancaster, and Blanche of Lancaster, was born in nearby Leicester Castle and was a Queen consort of Portugal, married in 1387 to King John I of Portugal during Anglo-Portuguese Alliance thus giving rise to extended name of the church (St. Mary de Castro) during one of its alterations.