Grey's Anatomy, Season 2Edit
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He was married to Ellis Grey, but she was cold to him and Meredith. He eventually left her to be happy. He has 3 daughters, Meredith, Lexie and Molly.
At some point, he married Ellis Grey and Meredith was born in 1978, but Ellis was cold to him and Meredith. Thatcher found out about the affair and Ellis left with Meredith. Thatcher signed away his legal rights to Meredith, signing away visitation rights, etc. Then he met Susan Grey, his future second wife. They married and have two daughters, Lexie and Molly. He was widowed as of 2007.
He is a professor.
- As revealed in "Hard Bargain", Thatcher was granted $15 million after the plane crash lawsuit as, as Lexie's next of kin, he was granted her sixth of the settlement.
- Thatcher's nickname is "Thatch" as given to him by his first wife, Ellis Grey.
- He snores in his sleep, a trait that Meredith inherited.
- His blood type is AB+.