- Aug 10 Camilio Benso di Cavour, Italian politician who advocated for unification (First Prime Minister of Italy 1861), born in Turin, First French Republic (d. 1861)
- Aug 10 Cornelis Outshoorn, Dutch architect (Amstel Hotel), born in Nieuwveen, Netherlands (d. 1875)
- Aug 14 Samuel Sebastian Wesley, English organist and composer, born in London (d. 1876)
- Aug 15 Louise Colet, French Romantic poet who had an affair with Gustave Flaubert, born in Aix-en-Provence, France (d. 1876)
- Aug 21 Thomas Jefferson McKean, American Brevet Major General (Union Army), born in Burlington, Pennsylvania (d. 1870)
- Aug 29 Juan Bautista Alberdi, Argentina political theorist and writer (Crime of War), born in San Miguel de Tucumán, Río de la Plata (d. 1884)