Portrait of the emperor in exile, 1912
|Native name||Āthanetān Arhachessȯn Saniżon|
|Born||March 14, 1808|
|Died||December 23, 1937 (aged 129)|
Athanetan III (Imperial Osveraali: Āthanetān Arhachēssȯn Saniżon ['ɑ:θɐnɛtɑ:n ɐʀɐ'xe:s:ɞn 'sɐnɪʒɔn], 14 March 1808 - 23 December 1937) was the twentieth and last Osveraali Emperor and King of Usuva, reigning from 1841 until the dissolution of the Empire in 1866.