Trịnh Kiểm becomes de facto Northern rulerJan 1, 1545Labels: Tr nh, L Restoration, ng NgoTr nh KiBritannica
Assassination of Lê Anh Tông amid Trịnh consolidationJan 22, 1573Labels: L Anh, Tr nhL Anh TCambridge
Trịnh–Nguyễn truce ends major 17th-century fightingJan 1, 1672Labels: Tr nh, Gianh RiverTr nh NguyTr nh T
Trịnh Cương initiates fiscal-administrative reformsJan 1, 1709Labels: Tr nh, Tonkin administrationBeck HistoryT y S