Read the bio below and try to give details on john wiersema 's: - successor - predecessor - office - term end - term start Bio: john edward wiersema was the interim auditor general of canada . he was appointed in may 2011 by the prime minister as for a mandate of six months after sheila fraser retired from the position . prior to his appointment , mr. wiersema was deputy auditor general .
- successor is michael ferguson- predecessor is sheila fraser- office is auditor general of canada- term end is november 27 , 2011- term start is may 31 , 2011