meredith and the chief i always felt that the chief was her rÃ©al father (Fan Fiction)
Meredith was born before Ellis started working at SGH .
Meredith is a perfect genetic match for Thatcher .
Ellis/Webber's affair started a couple of years into their residency .
These are facts that are canon in the show .So unless Richard had swimmers that could go back in time and mutate to match Thatchers you should probably rethink your idea