The name that is transliterated as “Alexander” in English is translated in Libras (Brazilian Sign Language) with a sign that combines the name of his father, Simon of Cyrene (see here) and the meaning of the name “Alexander” as “defender of men”. (Source: Missão Kophós )
“Alexander” in Libras (source )
See also Alexander (the priest) and Alexander (the coppersmith).
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .