You know WilliamEst is the perfect ThamePo. They are ThamePo and ThamePo is them. While i can always imagine other actors in whatever roles but with Thame, it is only William and with Po, it is only Est. 
Btw, 4 more days til epi 7! 
#ThamePoSeries 
#WilliamEst 
(My fav scene👇)
#ThamePoSeries #WilliamEst