Marek is though to have derived from Mars, the Greek god of war.It would mean being of Mars.It is also popularly known as meaning warlike, warring, or other things having to do with war.It can also be thought to mean being manly or being soft/tender.However, the most likely meanings in my opinion are being of Mars and warlike.My name is Marek, so I've looked it up.
Andrzej Marek's birth name is Marek Arnstein.
Marek Sart's birth name is Jan Szczerbinski.
Galen Marek
Marek Hamsik
it's Marek.
Mardosha's birth name is Marek Hunt.
Maz Nieviarovski's birth name is Marek Nieviarovski.
Aleksander Marten's birth name is Marek Tennenbaum.
Jaroslav Vejvoda's birth name is Jaroslav Marek.
Galen Marek
Agustin Egurrola's birth name is Agustin Marek Egurrola.
Leszek Galysz's birth name is Leszek Marek Galysz.