Complex sentence: Mack Bolan was born in Pittsfield, Massachusetts, of Welsh-Polish heritage, he is the eldest of the three children of steelworker Samuel Bolan and his wife, Elsa.
Split into simpler sentences: Mack Bolan was born in Pittsfield, Massachusetts. Of Welsh-Polish heritage, he is the eldest of the three children of steelworker Samuel Bolan and his wife, Elsa.