The sixth king of this name, through his descent from the fourth's marriage to
 Margaret Tudor, added a new kingdom to his realms.
Supporters of two different men of this name fought at the Battle of Sauchieburn, where the Homes and
 Hepburns killed the third holder of this name and elevated the fourth. An earlier holder of this name was
 assassinated by Walter, the Earl of Atholl, and wrote the Kingis Quair. The fourth holder of this name
 allied with France and was thus killed by Thomas Howard, the earl of Surrey, in 1513 after fighting English
 longbills at Flodden Field. The sixth king of this name, through his descent from the fourth's marriage to
 Margaret Tudor, added a new kingdom to his realms. For 10 points, identify this common name for kings
 of Scotland, one of whom became England's first Stuart monarch.
Supporters of two different men of this name fought at the Battle of Sauchieburn, where the Homes and
 Hepburns killed the third holder of this name and elevated the fourth.
{James}