Where does “Großväterchen” come from?

Großväterchen (German) comes from German Großvater, from German groß, from English daddy, from English -y, from Middle English -y, from Old English -iġ, from Proto-West Germanic -g, from Proto-Germanic -gaz — -y, -ic.

Ancestry of “Großväterchen”, step by step

StepLanguageWordMeaning
1GermanGroßvatergrandfather
2Germangroßbig, large, large-scale; great, grand; tall
3EnglishdaddyFather; A male lover; An informal term of address...
4English-yAdded to nouns and adjectives to form adjectives...
5Middle English-yDesignates an adjective, in many cases formed by...
6Old English-iġ-y, -ic
7Proto-West Germanic-gForms adjectives from nouns and verbs with a...
8Proto-Germanic-gaz-y
9Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European -ḱos