Both Uses

although
in
Much Ado About Nothing
(Auto-generated)

No, truly, not; although, until last night I have this twelvemonth been her bedfellow.†
Scene 4.1

although = even though -- used to connect contrasting ideas
So are the prince and Claudio, who accus'd her Upon the error that you heard debated: But Margaret was in some fault for this, Although against her will, as it appears In the true course of all the question.†
Scene 5.4 *

Definitions:

(1) (although)
even though -- used to introduce an idea that contrasts with or makes the main statement surprising

At the start of a sentence, although can play a role similar to words like however, yet, still, even so, on the other hand, or nonetheless—all of which signal contrast. In the middle of a sentence, although can sometimes be used where but or though might also work, but though or but often sound more natural. For example, "She's a great teacher, though not the most popular" is usually smoother than "She's a great teacher, although not the most popular."
(2) (meaning too rare to warrant focus)