Where does “Altham” come from?

Altham (English) comes from Old English hamm, from Proto-Germanic hammō, from Proto-Indo-European kónh₂m — leg.

Ancestry of “Altham”, step by step

StepLanguageWordMeaning
1Old Englishhammham, inner knee; enclosure, piece of enclosed...
2Proto-Germanichammōshinbone; the hollow of the knee; ham
3Proto-Indo-Europeankónh₂mleg
Every word from Proto-Indo-European kónh₂m →Every word from Proto-Germanic hammō →Every word from Old English hamm →