Complex sentence: Tommy's first born child, Brian Gallacher, also played football professionally for Dumbarton, Kilmarnock, St Mirren, Partick Thistle and Albion Rovers.
Split into simpler sentences: Tommy's first born child, Brian Gallacher, also played football professionally. Brian played in Scotland for Dumbarton, Kilmarnock, St Mirren, Partick Thistle and Albion Rovers.