Complex sentence: She later married the 2nd Earl of Essex on 20 January 1214 and after he died in 1216, she married Hugh de Burgh (later Earl of Kent) in September 1217.
Split into simpler sentences: She later married the 2nd Earl of Essex on 20 January 1214 and he died in 1216. A year after her second husbands demise she married Hugh de Burgh (later Earl of Kent) in September 1217.