A couple things I learned from Talking Dead and the Story Sync:

-Mary is Gareth's mother. His brother Alex died in the last episode of season 4. Rick's group is responsible for the deaths of Gareth's only two family members at Terminus.

-The first guy to get a slit throat in the pig trough was actually a character from season 4:

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The weird tattoo guy that Glenn let out was the same guy from the end of the episode in the flashback who had Gareth and co. locked up in the train car:

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