Complex sentence: Soon afterwards James I of Scotland came to Inverness, intending to pursue Angus Du Mackay who submitted himself to the King's mercy, and gave his son Neil as a pledge of his future obedience.
Split into simpler sentences: Soon afterwards James I of Scotland came to Inverness, intending to pursue Angus Du Mackay. Angus submitted himself to the King's mercy, and gave his son Neil as a pledge of his future obedience.