Teemant was born in Illuste (now
Paatsalu),
Vigala Parish, in present-day
Pärnu County. He graduated from
Hugo Treffner Gymnasium in
Tartu in 1893, and thereafter studied at the Department of Law at
Saint Petersburg Imperial University, graduating in 1901. Upon his graduation he returned to Estonia, where he worked as a solicitor in
Tallinn. In 1904–1905, Teemant was a member of the Tallinn Municipal Council. He participated in the
1905 Revolution, and was elected head of the All-Estonian Congress, held in Tartu in November 1905. His activities during the revolution forced him into exile in
Switzerland; while there, he was sentenced to death
in absentia. After the state of martial law imposed after the revolution was lifted and his death sentence was revoked, Teemant returned to Estonia in 1908. There, he was arrested and held in pretrial detention in 1908–1909, and then sentenced to one and a half years in prison. He served his prison sentence in
Saint Petersburg, and then spent 1911–1913 in penal exile in the
Arkhangelsk province in northern Russia. ==Independent Estonia==