fourpenny

The story

1. Proto-Indo-European*kʷetwṓr
2. Proto-Germanic*fedwōr
3. Proto-West Germanic*feuwar
4. Old Englishfēower
5. Middle Englishfour
6. Englishfour
7. Ancient Greekπᾰτᾰ́νη (pătắnē)
8. Latinpatina
9. Latinpanna?
10. Latinpannus?
11. Proto-Germanic*panningaz
12. Proto-West Germanic*panning
13. Old Englishpeniġ
14. Middle Englishpeny
15. Englishpenny
16. English todayfourpenny

From four + penny.