[1] He was educated at Eton College, and after spending three years in Europe he joined the chambers of Montagu Williams as a pupil aged about twenty-one.
[1] Mathews appeared in several infamous cases, including R. v. Dudley and Stephens, Oscar Wilde's suit for libel against John Douglas, 9th Marquess of Queensberry and Lord Colin Campbell's divorce proceedings.
He prosecuted the Jameson Raiders, Arthur Alfred Lynch, and Louise Masset, who murdered her own son at Dalston Junction railway station.
He successfully prosecuted Kitty Byron for the murder of her lover Arthur Reginald Baker in 1902.
Indeed, the crowd were tempted to treat the court as a theatre, and among the many notabilities of the day present famous actors predominated.