Căoi [Căoiu, Caoni, Căuni, Căunu] # Veţel (Hunedoara); Káun, Kávapatak, Kannapataka; Kaunsdorf (g); 1387 Villa libera Cauapathaka (Wagner 252); 1453 Kawa, 1491 Poss. Cawapathak, Poss. Kawapathak (Csánki V. 100); 1733 Kaun (cK.); 1750 Keoj (cA.); 1760-1762 Kaun (cB.); 1800 Kann (El. 1800); 1808 pag. Kaun, Kaunsdorf, Koná (Lipszky); 1817 Kaun (El. 1817); 1839 Kaun, Káony; Keun (Lenk II. 224-225); 1850 Kaun, Keun (UES); 1857 Kaun, Căunu (Bielz 520); 1873 Kaun, 1882 Kaun, Keun, 1893 Kaun (Hnt. 1873, 1882, 1893); 1909 Căuni, Káun (Dicţionar 1909); 1913 Káun (Hnt. 1913); 1921 Căuni, Káun (Dicţionar 1921); 1925, 1932 Căoiu (Leg. 95/1925; I.s.); 1956 Căoi (IAL) ✪ Hunyad vm.; 1761-1851 Fogarasi I. Rogyhőrezr. 1. szd.; 1785-1790 Hunyad vm. hőrv.; 1800 C. Hunyadiensis, Cis Marus, in Processu Dévaiensi; 1817 C. Hunyadiensis, in Circulo Marus Inferiori, in Processu Devensi; 1827 In Comitatu Hunyad; 1839 Hunyad vm., Alsó ker. Dévai j.; 1850-1854 Gyfv. kat. vidék Gyfv. ker. Dévai alker.; 1854-1860 Szászvárosi ker. Dévai j.; 1873, 1877 Hnvm., Dévai j.; 1880 Hnvm., Déva-Lapusnyaki j.; 1882-1918 Hnvm., Dévai j.; 1919-1925 Jud. Hunedoara, pls. Deva; 1925-1930 Jud. Hunedoara, pls. Şoimuş; 1930-1950 Jud. Hunedoara, pls. Deva; 1950-1968 RHD r. Ilia