Where does “daddie” come from?

daddie (English) comes from English dad, from English Dade.

Ancestry of “daddie”, step by step

daddie traces back through two separate lines of ancestry.

via English dad

StepLanguageWordMeaning
1EnglishdadA father, a male parent; Synonyms: dada, daddy,...
2EnglishDade

via English ie

StepLanguageWordMeaning
1EnglishieAlternative form of i.e
Every word from English DadeEvery word from English dad