The initial idioms of the letter S

Sir James Clark Ross	Sir James Dewar
Sir James Matthew Barrie	Sir James Murray
Sir James Paget	Sir James Paul McCartney
Sir James Young Simpson	Sir John Carew Eccles
Sir John Cockcroft	Sir John Cowdery Kendrew
Sir John Douglas Cockcroft	Sir John Everett Millais
Sir John Falstaff	Sir John Frederick William Herschel
Sir John Gielgud	Sir John Hawkins
Sir John Hawkyns	Sir John Herschel
Sir John Ross	Sir John Suckling
Sir John Tenniel	Sir John Vanbrigh
Sir Joseph Banks	Sir Joseph John Thomson
Sir Joseph Paxton	Sir Joshua Reynolds
Sir Karl Raimund Popper	Sir Lancelot
Sir Laurence Kerr Olivier	Sir Leonard Hutton