The name that is translated as “Phlegon” in English is translated in Libras (Brazilian Sign Language) with a sign that signifies “bishop” (his position) and “fire,” referring to the meaning of his name. (Source: Missão Kophós )
“Phlegon” in Libras (source )
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .
More information on Phlegon of Marathon.