Male Lead in period drama has to choose love or revenge

I have a drama in mind that I wanted to finish, but did not write down. 

It’s a male lead who is a powerful businessman in his village (not a prince) the older brother who protects his people and younger brother. Female lead swaps places and ends up married to him.. they fall in love, but she is the daughter of the man who killed his parents. He has to choose revenge/duty or loving her. She has to protect her bad father.

The Princess man