Complex sentence: After Alexander Wilson's retirement in 1928, Ronald Wilson continued the practice until 1955 and the Wilson design dynasty was ensured when he too was joined by his son, Blair M. Wilson, a University of Queensland graduate and father of current managing director Hamilton B. Wilson.
Split into simpler sentences: After Alexander Wilson's retirement in 1928, Ronald Wilson continued the practice until 1955. He in turn was joined by his son, Blair M. Wilson, a University of Queensland graduate and the father of current managing director Hamilton B. Wilson.