Heart = Hjärta in Swedish
No, but it is a Swedish company. It's called Sandvik because it's based in a Swedish town called Sandviken.
Blueberries are called blåbär in Swedish.
Yes, on Swedish it's called Smörgåsbord.
Jenny Lind, the Swedish opera singer, often called the Swedish nightingale
buttermilk
The closest thing would be muffins in Swedish.
Blessed thistle is called "kardbenedikt" in Swedish.
In Swedish a rug is called: "matta" If you are interested in learning more about Swedish rugs and the artists who wove them then I suggest you at a look at the attached links.
They are called Chipettes.
Mother is spelled mor in Swedish.
Winter is called "Vinter" in Swedish, pretty similar :)