The surname KUBIS's origin is connected with Latin Jacobus, late Latin Jacmus and Hebrew Yaakov. Variations include:
Jacobb, Jacobbe, Jeacop, Jecop (English);
Jakov, Yakob, Yaakov, Yakov, Jacobi, Jacoby (Jewish).
Cognate forms include Giacobbo, Giacobo, Giacubbo, Giacoppo, Iacobo, Iacopo, Iacovo, Iacofo, Copo, Coppo (Italian);
Jakob (German);
Kobus (Flemish, Dutch);
Jakubski, Kobus (this one rather comes from the Polish name of a bird 'kobuz'), Kobiera, Kobierski (those two comes rather from the name of a plant used to make certain kind of rugs), Kobieraycki, Kubas, Kubisz, Kupisz, Kubacki, Kubicki, Kubera (Polish);
Jakoubec, Kubu, Kouba, Kuba, Koba, Kob, Kopa, Kopac, Kopal, Kubal, Kubala, Kubat, Kubec, Kubes, Kubin, Kubis, Kubista, Kupec (Czech);
Jakab, Kabos (Hungarian).
Numerous diminutive forms are found, as are patronymic versions such as:
Jacobs, Jacobson (English);
Jakobsen, Jakobs (Low German);
Jacobsen, Jakobsen (Danish, Norwegian).

Yaakov comes from the Hebrew word 'akev' meaning 'heel'. The other meaning is 'supplanter' which probably comes from the story about Yaakov (later known as Jacob and also Israel). The biblical Jacob was born holding on to his brother Esau's heel. He was the son of Isaac and Rebecca and the father of the twelve founders of the twelve tribes of Israel.

The surname KUBIS seems to be of Czech origin and Czechia is probably the place where my ancestors are from.