Alsatian

region between France and Germany (given to France 1648 at the settlement of the Thirty Years' War and disputed over ever since), from Medieval Latin Alsatia, explained as from Old High German *Ali-sazzo "inhabitant of the other (bank of the Rhine)," from Proto-Germanic *alja "other" (from PIE root *al- (1) "beyond") + Old High German -sazzo "inhabitant," literally "one who sits."

"of the same parents or grandparents," c. 1300, from Old French germain "own, full; born of the same mother and father; closely related" (12c.), from Latin germanus "full, own (of brothers and sisters); one's own brother; genuine, real, actual, true," related to germen (genitive germinis) "sprout, bud," which is of uncertain origin; perhaps it is a dissimilation of PIE *gen(e)-men-, suffixed form of root *gene- "give birth, beget," with derivatives referring to procreation and familial and tribal groups.

Your cousin-german (also first cousin) is the son or daughter of an uncle or aunt; your children and your first cousins are second cousins to one another; to you, your first cousin's children are first cousins once removed.