Other
English history.net: The Six Wives of Henry Viii
If you're looking for a good resource on the six wives of Henry VIII, then you've found the right place. This site presents detailed biographies on each of Henry's wives plus links to other resourceful information.
Other
Tudor History: Mary I
Tudor History offers a brief biography of Mary I, the first child of Henry VIII, who reigned as Queen of England from 1553-1558.
Curated OER
Portrait of Katharine of Aragon by Michael Sittow, C1502
Two brief accounts of the life of Katharine of Aragon, Henry VIII's first wife from English History. Site also includes letters written by Katharine.