Family Name: The character 贾 originally referred to a merchant. The surname 贾 traces its origins to the Shang Dynasty, with the earliest known figure being Jiabo, a minister of King Wu Ding. Prominent branches include the Jia clan of the State of Jin during the Spring and Autumn period, who were influential officials. The surname later spread across China and became common.
Given Name: Vastness symbolizes grandeur, while 'Nan' represents resilience and nobility.