The initial idioms of the letter S

Sir Frederick Grant Banting	Sir Frederick Handley Page
Sir Galahad	Sir Gawain
Sir Geoffrey Wilkinson	Sir George Otto Trevelyan
Sir George Paget Thomson	Sir Geraint
Sir Hans Adolf Krebs	Sir Harold George Nicolson
Sir Harold Walter Kroto	Sir Harry MacLennan Lauder
Sir Henry Bessemer	Sir Henry Joseph Wood
Sir Henry Maxmilian Beerbohm	Sir Henry Morgan
Sir Henry Morton Stanley	Sir Henry Percy
Sir Henry Rider Haggard	Sir Henry Wood
Sir Herbert Beerbohm Tree	Sir Hiram Stevens Maxim
Sir Howard Walter Florey	Sir Humphrey Davy
Sir Humphrey Gilbert	Sir Isaac Newton
Sir Isaac Pitman	Sir Jacob Epstein
Sir James Augustus Henry Murray	Sir James Augustus Murray