Following is information from the Arab media about some of the flotilla participants. It should be noted that many of these were from the Muslim Brotherhood across the Muslim world...[The rest.]

Bishop Hilarion Capucci
Aboard the Mavi Marmara
No known affiliations
Convicted and imprisoned in the 1970s for smuggling weapons from Lebanon to the PLO
An article in The Daily Telegraph from 2009 described him as a 'veteran Palestinian rights campaigner', without mentioning his conviction

Muhammad Al-Baltaji
Ship unknown
Deputy secretary-general, Egyptian Muslim Brotherhood parliamentary bloc
'[We] will never recognize Israel and will never abandon the resistance'

Sheikh Jalal Al-Sharqi
Ship unknown
Head of the Association of Islamic Scholars in the GCC Countries
Signed a clerics' petition calling to acknowledge Hamas's legitimacy, and to not prevent it from obtaining weapons.