Where does “Wilsonism” come from?

Wilsonism (English) comes from English Wilson, from English Will, from English william, from Middle English William, from Anglo-Norman Willame, from Old High German Willahelm, from Old High German helm, from Proto-West Germanic helm — to pierce, strike; to stick; prick; stab.

Ancestry of “Wilsonism”, step by step

Wilsonism traces back through two separate lines of ancestry.

via English Wilson

StepLanguageWordMeaning
1EnglishWilsonOS grid ref SK4024
2EnglishWillA weak-side linebacker
3Englishwilliamradiotelephony clear-code word for the letter W
4Middle EnglishWilliam
5Anglo-NormanWillame
6Old High GermanWillahelmWilliam
7Old High Germanhelmhelmet
8Proto-West Germanichelmhelmet
9Proto-Germanichelmazhelmet
10Proto-Germanichalmazhalm; stem; stalk; straw; hay
11Proto-Indo-Europeanḱolh₂mosstalk
12Proto-Indo-Europeanḱelh₂-to pierce, strike; to stick; prick; stab

via English ism

StepLanguageWordMeaning
1EnglishismAn ideology, system of thought, or practice that...
2English-ismUsed to form nouns of action or process or result...
3Latin-ismus-ism
4Ancient Greek-ισμόςForms abstract nouns
5Ancient Greek-μόςForms abstract nouns
6Proto-Indo-European-mósCreates action/result nouns from verb stems
Every word from Proto-Indo-European ḱelh₂-Every word from Proto-Indo-European ḱolh₂mosEvery word from Proto-Germanic halmaz