The Daughter of the Marquis, Who Was Executed Under False Accusation, Wants to Spend a Peaceful Life in the Land Protected by God is a Manga/Manhwa/Manhua in (English/Raw) language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Catriona Julie Grande, a marquis’ daughter, was the Crown Prince’s fiancee. She was executed under false charges but went back in time. All she wanted was to live her life peacefully and prevent the same tragic fate from occurring again. But one day, the Prince appears in her life again and everything begins to fall apart. She has no idea what to do.