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Then, in 2018, Track was arrested and jailed on the day before Willow and Ricky's wedding in Talkeetna, Alaska.
Track is often absent from the Palin family's social media photos, and it's unclear if they have a relationship with his children.
Sarah, 57, reposted Willow's video on her Instagram Stories, writing: 'Blessings on your children, and their children, and their children.
A few months later, she learned she was pregnant with Charlie.
Do you want to automatically post your MailOnline comments to your Facebook Timeline? Single mom: Bristol shares a son Tripp, 12, with former fiancé Levi Johnston, and she has daughters Sailor Grace, five, and Atlee Bay, four, with her ex-husband Dakota Meyer Willow's older sister Bristol has three children: daughters Sailor Grace, five, and Atlee Bay, four, with her ex-husband Dakota Meyer and a son Tripp, 12, with her former fiancé Levi Johnston.
Second child: Track also has a four-year-old son Charlie Mitchell with his ex-girlfriend Jordan Loewe left , who has spoken publicly about his alleged domestic violence The two filed for divorce in 2012 and Britta received custody of their daughter.