Complex sentence: Kyle and her husband Liam Kerr had three children, two sons Conor and Declan and a daughter, Josie, who was Conor's twin died of infancy in 2014.
Split into simpler sentences: Kyle and her husband Liam Kerr had three children, two sons Conor and Declan. A daughter, Josie, who was Conor's twin, died in infancy in 2014.