Semigallia, also spelt Semigalia, is one of the Historical Latvian Lands located to the south of the Daugava river and to the north of the Saule region of Samogitia. The territory is split between Latvia and Lithuania, previously inhabited by the Semigallian Baltic tribe. They are noted for their long resistance (1219–1290) against the German crusaders and Teutonic Knights during the Northern Crusades. Semigallians had close linguistic and cultural ties with Samogitians.

Žagarė is a city located in the Joniškis district, northern Lithuania, close to the border with Latvia. It has a population of about 2,000, down from 14,000 in 1914, when it was the 7th largest city in Lithuania. Žagarė is famous for Žagarvyšnė - a cherry species originated in Žagarė.