All 5 Uses of

however
in
Listening for Lions

Kanoro held me for a long moment and then said to me, "However far you go from here, you must carry me with you in your heart."
Book 1 *

however = regardless of how

However, I have found that he has had his own disappointments.
Book 2 *

however = a word used to connect contrasting ideas as when using though, in spite of that, in contrast, nevertheless, etc.

However friendless I was, I was not sure the Pritchards were the friends I needed or wanted.†
Book 1

The town is always crowded with sailors, and a loutish lot they are; however, we will be docking in Southampton.†
Book 2

The gentleman at the garage where I picked up the truck was obviously surprised to see that R. Pritchard was a young woman; however, the car had been paid for and he turned it over to me.†
Book 3

Definitions:

(1) (however as in: However, complications may...)
though (or another expression that connects contrasting ideas)

(Based on idea 1 we might not expect idea 2, but this is a way of saying that even though idea 1 exists, we still have idea 2. Synonyms include in spite of that, despite that, nevertheless, nonetheless, on the other hand, in contrastand but.)
(2) (however as in: However much she tried...)
to whatever degree (regardless of how much; or whatever unspecified amount)
(3) (however as in: However you do it, get it done!)
in whatever way
(4) (meaning too rare to warrant focus)
meaning too rare to warrant focus:

Much more rarely (and arguably incorrectly), however can be used to intensify the word how, as when one says "However did you find her?" Grammarians would suggest using two words for that usage: "How ever did you find her?"