Where does “Banksiadale” come from?

Banksiadale (English) comes from English Dale, from Middle English dale, from Old English dæl, from Proto-West Germanic daili, from Proto-Germanic dailiz, from Proto-Indo-European dʰayl- — part, watershed.

Ancestry of “Banksiadale”, step by step

Banksiadale traces back through two separate lines of ancestry.

via English Dale

StepLanguageWordMeaning
1EnglishDalefor someone living in a dale
2Middle EnglishdaleA dale or valley; A hole or barrow
3Old Englishdælpart; valley
4Proto-West Germanicdailipart
5Proto-Germanicdailizpart, portion, deal
6Proto-Indo-Europeandʰayl-part, watershed

via English banksia

StepLanguageWordMeaning
1EnglishbanksiaA plant belonging to the genus "Banksia"
2TranslingualBanksiagenus
3EnglishBanksa surname
Every word from Proto-Indo-European dʰayl-