Wikipedia
Garmash
Garmash (or Harmash in Ukrainian, Belarusian), ( Cyrillic: Гармаш) — is a Ruthenian ( Ukrainian and Belarusian) last name derived from the word гармата ( Ukr., Bel. harmáta, " gun, cannon"). It was originally the name given to Cossack gunners ( artillerymen) as well as gunsmiths (cannon founders) at the Zaporozhian Sich.
A possible alternative origin is the Prussian word Garme (Gorme), “ heat, warm”. Cf. Skr. ghṛṇa, Gk. thermos , Av. garəma, O.Pers.garmapada, Pers. garme, Phryg. germe, Thrac. germas, Arm. jerm, O.Pruss. goro, Lith. garas, Ltv. gars, Russ. žar, O.Ir. fogeir, Welsh gori, Alb. zjarr, Kashmiri germi, garū'm.