Havelange, who has been president since 1974, said he wanted to step down at just the right moment.
Ong stepped down as President at the age of 63.
He served only one term, stepping down at the 1935 general election.
Ms Brooks stepped down after 22 years at the company.
His role in management ended when he stepped down as chairman at the age of 73.
He officially stepped down as Principal at the end of 2009 after eight years.
After 14 seasons Watson stepped down as head coach at the end of the 2007-2008 season.
Gillick is expected to step down at the end of the season.
Bond stepped down as manager at the end of this season.
"But everybody has to step down at some point in time."
