Käsu Hans
Käsu Hans was an Estonian poet. He is the first known native Estonian writer. He is mostly known by his poem "Oh! ma vaene Tardo-liin".
Little is known about its life. He was a clergyman in Puhja.
His most famous lamentable poem "Oh! ma vaene Tardo-liin" was written in 1708 and its content is related to Tartu in the time of the Great Northern War, when Tartu was almost completely destroyed. The poem has thirty-two stanzas. The poems is written in South Estonian.