Complex sentence: On 18 August 2010, the pair welcomed a son named Budd, a daughter Cilla June Corser in 2012, and another surprise addition son Dustin Corser in summer 2015.
Split into simpler sentences: On 18 August 2010, the pair welcomed a son named Budd. This was followed by daughter Cilla June Corser in 2012, and another surprise addition son Dustin Corser in summer 2015.