Peony was the daughter of Posco Baggins and Gilly Brownlock Baggins. Peony was born in year 2950 of the Third Age. Peony had two older brothers named Ponto and Porto. She married Milo Burrows and the two had four children: Mosco, Moro, Myrtle, and Minto. The entire family, with the exception of Minto, attended Bilbo Baggins's Farewell Party held in TA 3001.