Where does “vaterlich” come from?

vaterlich (Middle High German) comes from Old High German faterlīh, from Proto-Germanic fadurlīkaz, from Proto-Germanic fadēr, from Proto-Indo-European ph₂tḗr, from Proto-Indo-European peh₂- — to protect; to shepherd.

Ancestry of “vaterlich”, step by step

StepLanguageWordMeaning
1Old High Germanfaterlīh—
2Proto-Germanicfadurlīkazfatherly; fatherlike
3Proto-Germanicfadērfather
4Proto-Indo-Europeanph₂tḗrfather
5Proto-Indo-Europeanpeh₂-to protect; to shepherd
Every word from Proto-Indo-European peh₂- →Every word from Proto-Indo-European ph₂tḗr →Every word from Proto-Germanic fadēr →