Simplify the following text for a Grade 6 native English-speaking person.
Original: Henrietta had strong Catholic beliefs , which would heavily influence her time as queen , and particularly the initial years following her marriage . Charles liked to call Henrietta Maria simply `` Maria '' , with the English people calling her `` Queen Mary '' , alluding to Charles ' Catholic grandmother .
Simplified: Henrietta Maria married Charles I and became the Queen of England .