From the Wikipedia page 
Vidzeme (Livonian: Vidūmō) is one of the historical and cultural regions of Latvia. Literally meaning "the Middle Land", it is situated in north-central Latvia north of the Daugava River. Sometimes in German, it is also known as Livland, the German form from Latin Livonia, though it comprises only a small part of Medieval Livonia and about half (Latvian part) of Swedish Livonia.
Vidzemes guberņa – Livland Governorate is also bigger than Vidzeme, since it corresponds roughly to Swedish Livonia.