blue flower

like the symbol for romanticism.

When I thought we were going to sell this house I dug out one single plant that had been doing particularly well. I have no idea what it's name is.
The leaves are hairy and there are white spots on them . The flowers are blue and come in little clusters.
When I took it out of the bed, before the frost,  with the plan to replant it in spring in Oregon, the plant had already lost most of the leaves and looked very wintery. Being then in a big pot in our dining room has coaxed it into believing that it is spring and summer is close. So first it grew lots of new leaves, then the little flower stems came up with the clusters at the end and yesterday it opened the first flower.

I am so attached to this plant because I had the same plant in my garden in Hamburg. Sentimental memories....

Do you know it's name? (Full grown in the yard, the leaves can be as big as a hand)