Sir George-Étienne Cartier was born on September 6, 1814.
There was probably no real person called "Sir Lanceolot" and, if there was, we do no know when his birthday was.
Sir Walter Raliegh's birthday is September 5, 1552 or 1554
Sir Christus was born on April 10, 1978.
*
May 26th
27 August
Sir Godfrey Hounsfield was born on August 28, 1919.
Sir Alexander Gibson was born on February 11, 1926.
Sir Edward Creasy was born on September 12, 1812.
Sir John Soane was born on September 10, 1753.
Sir Alexander Fleming was born on August 6, 1881.
Sir Robert Walpole was born on August 26, 1676.