Pereira was born in Half Moon Bay, California, the son of Portuguese immigrants.
[3] Pereira won the European Heavyweight Championship in July 1937 in Paris, France, defeating Henri Deglane.
In 1933–36, Pereira was living at 144 N27th St, San Jose, California.
In 1937 Alf and Nellie Pereira were living in Oakland, California.
On January 15, 1990, Pereira died in Multnomah, Portland, Oregon.