The name Sansa is a girl's name of Sanskrit origin meaning "praise, charm". Sansa and is often added to lists like Unique Girl Names: Unusual and Rare and discussed in our forums with posts like "Adding Then Eliminating -- Girls Themed".
From the experts:
Game of Thrones author George R. R. Martin is a master namer, and this unusual choice from India is beginning to be heard in nurseries as well as on television. Sansa was perhaps slower to catch on than other names such as Arya and Khaleesi as Sansa Stark was in the first seasons of the show a weak and compromised character. But she's developed a good measure of backbone and integrity, which makes her lovely name a more attractive possibility. In 2015, 20 baby girls in the US were named Sansa, a number we expect to rise.