Sean Aloysius O'Brien

Sean Aloysius O'Brien who lived on Earth in the early 20th century. O'Brien was a distant ancestor of Miles O'Brien and his children Molly and Kirayoshi O'Brien family. A resident of western Pennsylvania, O'Brien was a labor union leader.

In 1902 O'Brien helped lead an anthracite strike, in which mine workers in western Pennsylvania refused to work in the mines until their conditions had been met. The strike was successful, however O'Brien had not lived to see that, having been assassinated shortly before the end of the strike. O'Brien had been found in the Allegheny River with nearly three dozen bullets in his body. The funeral held for O'Brien was one of the largest ever seen in that part of Pennsylvania.

Miles O'Brien related the tale of Sean O'Brien to Rom when Rom decided to work to improve conditions at Quark's bar on Deep Space Nine. Despite opposition from Quark and the Ferengi Commerce Authority, Rom followed Sean O'Brien's example and remained firm on improving conditions for the bar's employees. (DS9 episode Bar Association).