Your first unicode character won't render in Windows.

þ?

I can see it is LATIN SMALL LETTER Y + COMBINING LATIN SMALL LETTER S .. not sure what that ligature is, though. My knowledge of old English is very lacking :)

it's a lowercase y with an s over it, like you would see a diacritic rendered. never seen it before.

edit: it shows up in the "descendants" list on the side of https://en.wikipedia.org/wiki/Thorn_(letter)