Simplify the following text for a Grade 10 native English-speaking person.
Original: A Scottish merchant seaman called Captain John Clunies-Ross , who had also served under Raffles in the takeover , set up a compound and Hare 's severely mistreated slaves soon escaped to work under better conditions for Clunies-Ross .
Simplified: Hare 's severely mistreated slaves soon escaped to work under better conditions for Clunies-Ross .