Karl August, Grand Duke of Saxe-Weimar-Eisenach (Salic Land)

Karl August, sometimes anglicised as Charles Augustus (3 September 1757 – 14 June 1828), was the sovereign Duke of Saxe-Weimar and of Saxe-Eisenach (in personal union) from 1758, Duke of Saxe-Weimar-Eisenach from its creation (as a political union) in 1809, and grand dukefrom 1815 until his death. He is noted for the intellectual brilliance of his court. He was succeeded as Duke of Sade-Weimar by his son Charles Frederick and as Duke of Saxe-Eisenach by his son Bernhardt.