Simplify the following text for a Grade 12 native English-speaking person.
Original: Elizabeth Gladys â Millvinaâ Dean ( born February 2 , 1912 ) and died May 31 , 2009 was , at age 97 , the last living survivor of the sinking of the RMS Titanic that occurred April 15 , 1912 .
Simplified: Elizabeth Gladys Millvina Dean ( 2 February 1912 -- 31 May 2009 ) was the last remaining survivor of the sinking of the RMS Titanic , which occurred on 15 April 1912 .