So my father grew up in an ...

So my father grew up in an orphanage in Boston. He was then adopted by an elderly childless couple from Maine, who gave him the name of Mitchell. He moved to Maine, and there he met my mother and was married.
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 George J. Mitchell

Quotes from the same author

My father was the orphaned son of immigrants to the United States from Ireland. My father never knew his parents. His mother died - we're not sure - either at or shortly after his birth, and he and all of his siblings were placed in orphanages in the Boston area.
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 George J. Mitchell
My mother was an immigrant from Lebanon to the United States. She came when she was 18 years old in 1920.
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 George J. Mitchell
I really owe everything to my parents and their devotion and drive to see to it that their children had the education which led to the opportunities that they never were able to have.
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 George J. Mitchell