This is Erysimum cheiri, the
online translator tells me it is wallflower in English.
They are very pretty spring flowers and come in different colours. Some are more fragrant than others. Family is brassicae, but this plant is slightly poisonous.
I love them and have ordered seeds recently. My garden is a bit difficult for them, I have to pamper them quite a bit.
You are lucky, enjoy!
I am only one, but still I am one. I cannot do everything, but still I can do something; and because I cannot do everything, I will not refuse to do something that I can do. (E.E.Hale)