Mervyn graduated from the University of Toronto, St. Michaels College with a degree in Bachelor of Arts on June 8, 1950. He attended Osgoode Hall Law School and was called to the Bar as a Barrister and Solicitor on June 24, 1954. Mervyn was appointed Queens Counsel on December 15, 1966 and was admitted by the Chancellor and Senate of the York University on June 15, 1991 to the Degree of Bachelor of Laws. On June 24, 2004, he became a Life Member of the Law Society of Upper Canada.

Mervyn has a long and distinguished career of legal and public service in the Waterloo Region dating back to 1956. He served on Kitchener City Council for 15 years from 1964 to 1979 and spent 6 years on Regional Council from 1972 to 1978. He has also served on various Hospital and University Boards and is presently a member of the Board of Mosaic Counselling & Family Services (formerly known as the Catholic Family Counseling Centre). Mervyn has been practicing law for over 54 years and has served his corporate, institutional and individual clients in various areas of the law.

Mervyn joined the firm as Counsel in 2001 and continues to provide advice and guidance to his clients and to the firm in corporate/commercial, real estate, and estate matters.