According to Our Baby Namer, the name "Samaria" for females means "watch mountain" or "watch tower." It derives from the Hebrew and Arabic name of the ancient Hebrew city located in the Samaria mountains.
According to Wikipedia, between the 8th and 9th century B.C., Samaria was the capitol city of the Kingdom of Israel. Its ruins lie in the Samaria mountains, and they're under the jurisdiction of the Israel National Park Authority. The city was besieged frequently in ancient times, but its hard-to-reach location made it difficult to take. Between 721 and 722 B.C., the city was finally captured by an Assyrian invasion.