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Warren Keith Lieberstein is an American writer and producer. He has worked on shows such as Carpoolers and The Office, to which he has extensive ties. He is the younger brother of the show's former showrunner/actor Paul Lieberstein and brother-in-law of its developer and original producer Greg Daniels. He and Angela Kinsey were married for eight years and have a daughter who was born in 2008. The pair have remained on good terms since their divorce. Lieberstein married fellow television writer Audrey Wauchope in 2016 and they have two daughters together, born in 2014 and 2017 His family is Jewish.