- Jul 2 John Bordenave Villepigue, American Brigadier General (Confederate Army), born in Camden, South Carolina (d. 1862)
- Jul 8 Frederick William Seward, United States Assistant Secretary of State (d. 1915)
- Jul 8 Grand Duchess Alexandra Iosifovna of Altenburg (d. 1911)
Camille Pissarro (1830-1903)
Jul 10 Danish Antillean and French Impressionist painter, born in Charlotte Amalie, Saint Thomas, Danish West Indies (now US Virgin Islands)
- Jul 14 Richard Henry Jackson, Irish-American Brevet Major General (Union Army), born in Kinnegad County, Westmeath, Ireland (d. 1892)
- Jul 17 Eelco Refer, linguist (Dictionary for the Dutch translator)
- Jul 22 Herbert Stanley Oakeley, English composer, born in Ealing (d. 1903)
- Jul 22 William Sooy Smith, American civil engineer and Brigadier General (Union Army), born in Tarlton, Ohio (d. 1916)
- Jul 29 Alvan Cullom Gillem, American Major General (Union Army), born in Gainesboro, Tennessee (d. 1875)
- Jul 31 František Zdeněk Skuherský, Czech composer, born in Opočno, Bohemia (d. 1892)