Both Uses

although
in
Love's Labour's Lost
(Auto-generated)

Suggestions are to other as to me; But I believe, although I seem so loath, I am the last that will last keep his oath.†
Scene 1.1 *

although = even though -- used to connect contrasting ideas
But say that he or we,—as neither have,—Receiv'd that sum, yet there remains unpaid A hundred thousand more, in surety of the which, One part of Aquitaine is bound to us, Although not valued to the money's worth.†
Scene 2.1

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)