There are several people with the surname Marceau:
Félicien Marceau, writer
François Séverin Marceau-Desgraviers, French general
Gilles Marceau (born 1928), Canadian lawyer and politician
Jean-François Marceau, Canadian judoka
Joseph Marceau, Canadian contractor and political figure
Marcel Marceau, mime
Olivier Marceau, athlete
Richard Marceau (born 1970), Canadian politician
Sophie Marceau, actress
William (Bill) Marceau, long running character in the crime/mystery serial The Edge of Night (1957-1979).
William Marceau born April 14 1977. Gold medalist Nutmeg State Olympic games in the 90's lacrosse.. Local 48 union ironworker champion in 2011