There are 7 names matching your criteria.
FARRAN m English (Rare)
From an English surname which was derived from Old French ferrant
meaning "iron grey".
GLÁUCIO m Portuguese
Portuguese form of the Roman cognomen Glaucia
, which was derived from Latin glaucus
"bluish grey", ultimately from Greek.
GRAY m English
From an English surname meaning "grey", originally given to a person who had grey hair or clothing.