The iconic film star’s daughter, actress Mamie Gummer, gave birth to a baby boy, Us Weekly reported on Thursday. The pair first met as children in 1993 on the set of Meryl Streep's movie The River Wild, which also starred Tay's dad, David Strathairn, Extra notes. The two were first spotted together in 2017 after which multiple reports suggested that the two are together MERYL Streep's daughter, Grace Gummer, separated from her husband at the time, Tay Strathairn, after just 42 days of marriage. In legal documents, obtained by The Blast, Grace Gummer filed for 'dissolution of marriage' on Monday, against her longtime partner Tay Strathairn. Meryl Streep's daughter Grace Gummer ends secret marriage to Tay Strathairn, files for divorce. Introducing Grandma Meryl. April 8 (UPI) --Meryl Streep's daughter Grace Gummer is headed for divorce. Actress Meryl Streep is in daughter Grace Gummer's 'corner' following surprising divorce from Tay Strathairn, a source tells Closer Weekly exclusively. Meryl and Don welcomed their third child and second daughter, Grace Jane Gummer, on May 9, 1986. Meryl's Streep's daughter, Grace Gummer, has filed for divorce from keyboardist Tay Strathairn even though it was never publicly reported the two were ever married..