There are saints like the brothers Kosmas and Damianos who are called the +æ+++¼-ü+¦-à -ü+++¦ (aNARyeeree) which literally means "silverless, without money" (plural) but they are known as such in the context of their refusing to receive any payment for the healing they performed (singular is +¦+++¼-ü+¦-à -ü++-é/aNARyeeros). In English they are referred to as the "unmercenaries".
How does "Matthew the Penniless" sound, +£+¦-ä+ÿ+¦+»++-é ++ +æ-Ç+¡++-ä+¦-ü++-é (matTHEos o aPENdaros)?
"Matthew the Poor" would be +£+¦-ä+++¦+»++-é ++ +ª-ä-ë-ç-î-é (ftoCHOS, "ch" as in Scottish "loch") but the meaning leans more towards "unfortunate".
That's the best I can do with the meagre resources I have at hand over the weekend. If you like I can ask at work tomorrow where I will be surrounded by Greek linguists

John.