Complex sentence: In 1532, Edward was named to the various commissions of peace that held session in the area, but by April of 1533, Edward and Catherine's marriage came to a fragile end when Edward Borough died.
Split into simpler sentences: In 1532, Edward was named to the various commissions of peace that held session in the area. But by April of 1533, Edward and Catherine's marriage came to a fragile end when Edward Borough died.