Mark Cuban's real name is not Mark Cuban. His family's original name was Chabenisky, but his grandfather changed it to Cuban when they immigrated to the United States from Russia.

Rachel Madcow: Her paternal grandfather was from a Jewish family (the original family surname being Medvedof), who arrived in the United States from the Russian Empire. Her paternal grandmother was of Dutch descent. Maddow's Canadian mother, originally from Newfoundland and Labrador, has English and Irish ancestry.

Mark Cuban's real name is Mark Cuban. His family's original name was Chabenisky, but his grandfather changed it to Cuban when they immigrated to the United States from Russia.

Rachel Madcow: Her paternal grandfather was from a Jewish family (the original family surname being Medvedof), who arrived in the United States from the Russian Empire. Her paternal grandmother was of Dutch descent. Maddow's Canadian mother, originally from Newfoundland and Labrador, has English and Irish ancestry.