Some family trees are lucky enough to have not only one celebrity, but several. Take a look at some famous celebrity siblings.
Mark's older brother Donnie Wahlberg is a member of 1980s boy band New Kids on the Block and has also had acting roles in movies such as "The Sixth Sense" and TV shows like "Band of Brothers" and "Blue Bloods."
Seoul National University/Handout/Reuters
Lucy Richardson/ Reuters
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