He was the son of Weetman Dickinson Pearson, 1st Viscount Cowdray, and Annie, daughter of Sir John Cass. He married Agnes Beryl, daughter of Lord Edward Spencer-Churchill, in 1905. They had one son and five daughters. Lady Cowdray died in February 1948.
He was a Liberal MP. In 1927 he succeeded his father in the viscountcy and entered the House of Lords. He died in October 1933, and was succeeded by his only son, Lt. Col. Weetman John Churchill Pearson (1910–1995) a businessman and polo player.
He owned Arrangement in Black, No. 2: Portrait of Mrs Louis Huth y125.
'Harold Pearson, 2nd Viscount Cowdray', Wikipedia.