Web Reference: Jan 17, 2026 · Jamie and Sean have welcomed three kids. Their eldest daughter, Maddie, was 8 when her dad accepted the Bills job in 2017, while Gavin was 6. Kelly, their youngest, was just a baby. Jan 19, 2026 · Their eldest daughter, Maddie, was eight years old when McDermott took the Bills job, while their son Gavin was six and their youngest child, Kelly, was an infant. Jan 19, 2026 · Sean McDermott is married to Jamie,and the couple have three children, Maddie, Gavin and Kelly. Their oldest daughter was born with a severe nut and tree nut allergy and their son has a sesame allergy.
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