   285px|thumb|the swedish empire the duchy of estonia (, , german: herzogtum estland), also known as swedish estonia,the swedish imperial experience 1560â1718 by michael roberts, isbn 0-521-27889-9, p 30 (swedish: svenska estland) was a dominion of the swedish empire from 1561 until 1721, when it was ceded to russia in the treaty of nystad, following its capitulation, during the plague, in the great northern war. the dominion arose during the livonian war, when the northern parts of present-day estonia (reval (tallinn) and the counties of harjumaa, western virumaa, raplamaa and jÃ¤rvamaa) submitted to the swedish king in 1561, and lÃ¤Ã¤nemaa in 1581. it is also colloquially known as the "good old swedish times"baltic postcolonialism by violeta kelertas, p. 397 () by estonians, but this expression was not used before the following russian rule, in the beginning of which the situation of estonian peasantry declined rapidly (to gain support of german nobility, russia gave them more power over peasantry). == head of dominion == ; governors (1561â1674) * lars ivarsson fleming friherre of nynÃ¤s, from sundholm 
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