Complex sentence: On 1 July 1553, Jean was married to Archibald Campbell, 5th Earl of Argyll; they would divorced later on 23 June 1573, the reason being desertion.
Split into simpler sentences: On 1 July 1553, Jean was married to Archibald Campbell, 5th Earl of Argyll. They divorced on 23 June 1573, the reason being desertion.