Simplify the following text for a Grade 8 native English-speaking person.
Original: Although Roosevelt was always in the good graces of her uncle , Theodore Roosevelt , the pater familias of the Oyster Bay Roosevelts , as the Republican branch of the family was known , she often found herself at odds with his eldest daughter , Alice Roosevelt .
Simplified: Eleanor always enjoyed the good graces of her uncle Theodore Roosevelt , the main figure of the Oyster Bay Roosevelts . However , she found her at odds with her cousin Alice Roosevelt .