Pearson was born in St. François Xavier, Manitoba, now part of Winnipeg, and educated at St. John's College.
After he was demobilized, he found work with William Pearson Company Ltd as a land surveyor and salesman.
After much of the company's lands were sold, Pearson began farming the remainder in the Lumsden, Saskatchewan vicinity.
Pearson was appointed to the upper house as a Progressive Conservative Senator for the division of Lumsden, Saskatchewan.
In his final statement in the chamber, he advised his fellow Senators to keep in touch with young Canadians.