Where does “maternall” come from?

maternall (Middle English) comes from Middle French maternel, from Latin māternus, from Latin -nus, from Proto-Italic -nos, from Proto-Indo-European -nós — Creates verbal adjectives from roots.

Ancestry of “maternall”, step by step

StepLanguageWordMeaning
1Middle Frenchmaternelmaternal
2Latinmāternusof or pertaining to a mother, maternal
3Latin-nus-an
4Proto-Italic-nosCreates verbal adjectives from verb stems
5Proto-Indo-European-nósCreates verbal adjectives from roots
Every word from Proto-Indo-European -nós →Every word from Latin -nus →Every word from Latin māternus →