EXCLUSIVE: Katey Sagal Gets Emotional Over Special Connection to Her Late Mother -- Watch the Gripping Moment

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Katey Sagal finally knows someone with ties to her mother.
The Sons of Anarchy star, who lost her parents at a young age, breaks down in an emotional moment on Who Do You Think You Are? after meeting Tinker, a woman who knew the actress' late mother when she was a USO performer during World War II.
"We were four green college kids, and this is when we left for our USO tour," Tinker reveals as she shows Sagal an old photograph of her mother.
"And there's my mother," says a choked-up Sagal. "I don't know anybody that knew my mother."
Watch the actress come to grips with this new revelation in the touching clip above.
Sagal’s episode of Who Do You Think You Are? airs Sunday at 9/8c on TLC.