Simplify the following text for a Grade 8 native English-speaking person.
Original: Louise `` Lou '' Henry Hoover ( March 29 , 1874 - January 7 , 1944 ) was the wife of Herbert Hoover , the President of the United States .
Simplified: Lou Henry Hoover ( March 29 , 1874 â `` January 7 , 1944 ) was the wife of Herbert Hoover and First Lady of the United States .