Nyland and Tavastehus County

Nyland and Tavastehus County (Nylands och Tavastehus län, Uudenmaan ja Hämeen lääni) was a county of the Swedish Empire in Finland from 1634 to 1809.

In 1775 whole northern part of the county (later Central Finland region) was transferred to the new Vasa County. Also a part of historical Satakunta was added to the Nyland and Tavastehus County from the Åbo and Björneborg County, while Upper Hollola was transferred to the new Kymmenegård County.

By the Treaty of Fredrikshamn in 1809 Sweden ceded all its territories in Finland, east of the Torne River, to Russia. The county still continued to exist as a province of the new autonomic Grand Duchy of Finland until 1831, when it was split to Häme Province and Uusimaa Province.

Governors

 * Arvid Göransson Horn af Kanckas 1634–1640
 * Arvid Göransson Horn af Kanckas 1640–1648 (Tavastehus County)
 * Reinhold Mettstake 1640–1642 (Nyland County)
 * Jacob Uggla 1642–1648 (Nyland County)
 * Erik Andersson Oxe 1648–1652
 * Ernst Johan Greutz 1652–1666
 * Udde Knutsson Ödell 1666–1668
 * Axel Eriksson Stålarm 1668–1678
 * Axel Rosenhane 1678–1685
 * Jonas Klingstedt 1685–1687
 * Karl Bonde 1687–1695
 * Mårten Lindhielm 1695–1696
 * Abraham Cronhjort 1696–1703
 * Johan Creutz 1703–1719
 * Per Stierncrantz 1719–1737
 * Axel Erik Gyllenstierna af Lundholm 1737–1746
 * Gustaf Samuel Gylleborg 1746–1756
 * Anders Johan Nordenskjöld 1756–1761
 * Hans Erik Boije af Gennäs 1761–1772
 * Carl Ribbing af Koberg 1773
 * Anders Henrik Ramsay 1774–1776
 * Anders de Bruce 1777–1786
 * Carl Gustaf Armfelt 1787–1788
 * Johan Henrik Munck 1790–1809
 * Gustaf Fredrik Stiernwall 1810–1815
 * Gustaf Hjärne 1816–1828
 * Carl Klick 1828–1831