In 1846 who founded a tailoring shop whose customers included an English actor and director who, along with his contemporaries Ralph Richardson and John Gielgud, dominated the British stage of the mid-20th century?
Savile Row tailoring:  In 1846, Henry Poole, credited as being the "Founder of Savile Row", opened an entrance to his tailoring premises into No. 32 Savile Row. Laurence Olivier: Laurence Kerr Olivier, Baron Olivier, {'1': ", '2': ", '3': ", '4': "} ( ; 22 May 1907 – 11 July 1989) was an English actor and director who, along with his contemporaries Ralph Richardson and John Gielgud, dominated the British stage of the mid-20th century.
Henry Poole