The Iron Throne of Ice and Fire

Game of Thrones fan, A Song of Ice and Fire fan.
Time travel, no harem, no system, no technology.
Machiavellian, no poison, supporting characters as close to prototypes as possible.
The mainstream does not follow the plain flow, but mainly focuses on the plot of Xiaoshuang, interspersed with great happiness.
Protagonist's name: Greene Kleb
Starting title: Baron of Whispering Castle
Family motto: United as one
Family crest: Swamp Marigold