This is the meaning of the last name: Kimmel, I reckon that the first name has the same meaning:
German and Jewish (Ashkenazic): from Middle High
German kumin,
German Kümmel ‘caraway’ (related to Latin cuminum, a word of Oriental origin, like the plant itself), hence a metonymic occupational name for a spicer, literally a supplier of caraway seeds.
source: ancestry.com