Simplify the following text for a Grade 7 native English-speaking person.
Original: In later years , when dozens of people made claims to be surviving members of the imperial family , a woman named Marga Boodts claimed to be Grand Duchess Olga , but her claim was not taken seriously .
Simplified: Later , many people falsely claimed to be surviving members of the royal family . A woman named Marga Boodts claimed to be Grand Duchess Olga , but she was not taken seriously .