Complex sentence: Wahlberg was born in the Dorchester neighborhood of Boston, Massachusetts, is the eighth of nine children, with older siblings Arthur, Jim, Paul, Robert, Tracey, Michelle, Debbie (died 2003), and younger brother Mark.
Split into simpler sentences: Wahlberg was born in the Dorchester neighborhood of Boston, Massachusetts. He is the eighth of nine children, with older siblings Arthur, Jim, Paul, Robert, Tracey, Michelle, Debbie (died 2003), and younger brother Mark.