Oh, Be Patient My Lady! is a Manga/Manhwa/Manhua in english language, Manhwa series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

Rose, the lord of a small and poor territory, White. She just wanted to eat well and live well with the residents there, but all of a sudden, there's an increasing surge of immigrants moving in from other areas, and they're getting caught in incidents?! The delightful romance fantasy of Rose, a strong and capable lord, and the great Archmage Yggdrasil, who wants to secretly hide her in the estate and protect her!