UK based music publishing company for the works of Rodgers & Hammerstein, now dissolved. Previously owned by Richard Rodgers and Oscar Hammerstein II, and later by the beneficiaries & executors of their estates. They both had a father named 'William', hence 'son of William' (Williamson).
Full legal entity name: Williamson Music Limited
UK company number; 00433959
Incorporated: 25 April 1947
Dissolved: 9 October 2018
Please, consider also Williamson Music, Williamson Music Co., or Williamson Music, Inc.