William Dawnay, 6th Viscount Downe Irish peer (1772–1846) Parents Laura Burton John Dawnay, 4th Viscount Downe Children William Dawnay, 7th Viscount Downe Hon. Lydia Frances Catherine Dawnay Payan Dawnay Siblings Marmaduke Langley John Dawnay, 5th Viscount Downe Partners Lydia Heathcote