Simplify the following text for a Grade 7 native English-speaking person.
Original: Gulzar was born in a Kalra Arora Sikh family , to Makhan Singh Kalra and Sujan Kaur , in Dina , Jhelum District , British India , in what is now Pakistan . Before becoming an established writer , Sampooran worked as a car mechanic in a garage .
Simplified: Sampooran Singh Kalra , known as Gulzar is a song writer , poet and film director from India .