Complex sentence: Colonel David de Crespigny Smiley LVO, OBE, MC (11 April 1916--8 January 2009) was the son of Major Sir John Smiley, 2nd Baronet and Valerie Champion de Crespigny.
Split into simpler sentences: Colonel David de Crespigny Smiley LVO, OBE, MC was born on 11 April 1916. He was the son of Major Sir John Smiley, 2nd Baronet and Valerie Champion de Crespigny.