Simplify the following text for a Grade 6 native English-speaking person.
Original: As well as being the first woman and the first who has never been married , Gillard is the first Prime Minister since Billy Hughes ( 1915 â `` 1923 ) to have been born overseas .
Simplified: She is also Australia 's first prime minister never to have married . Gillard is the first prime minster not born in Australia since Billy Hughes , who served from 1915 to 1923 .