南阳郡 / Nanyang Commandery
南阳郡 / Nanyang Commandery appears in 《资治通鉴·周纪》85｜宣太后为何私通30年后暗杀了老情人？ as the Qin commandery organized after 魏国’s previous cession of Nanyang to 秦国. The host identifies the likely region as the northern 楚国 territory Qin had recently occupied, with the administrative center at Wan, near today’s Nanyang in Henan.
The page is source-scoped. Its importance is administrative rather than biographical: like 南郡 and 北地郡, it shows Qin converting campaign or diplomatic gains into commandery structure rather than leaving them as loose conquest.