Who was speaker of the house for Lyndon Johnson?

During Lyndon Johnson's presidency, the Speaker of the House was Sam Rayburn. He served in this role from 1940 until his death in 1961, making him one of the longest-serving Speakers in U.S. history. Rayburn was a key ally of Johnson and played a significant role in passing major legislation during the Great Society era. After Rayburn's passing, John W. McCormack succeeded him as Speaker.