Where does “hearth-penny” come from?

hearth-penny (English) comes from Middle English herthpeny, from Old English heorþpeniġ, from Old English heorþ, from Proto-West Germanic herþ, from Proto-Germanic herþaz, from Proto-Indo-European kérh₃-to-s, from Proto-Indo-European kerh₃- — to burn; to praise; to burn; fire, heat.

Ancestry of “hearth-penny”, step by step

StepLanguageWordMeaning
1Middle Englishherthpeny
2Old Englishheorþpeniġ
3Old Englishheorþhearth
4Proto-West Germanicherþhearth, fireplace
5Proto-Germanicherþaz
6Proto-Indo-Europeankérh₃-to-s
7Proto-Indo-Europeankerh₃-to burn; to praise; to burn; fire, heat
Every word from Proto-Indo-European kerh₃-Every word from Proto-Indo-European kérh₃-to-sEvery word from Proto-Germanic herþaz