Violet Constance Jessop (1887 - 1971) has been nicknamed "Miss Unsinkable" because she survived the sinking of the RMS Titanic and its sister ship, the HMHS Britannic. She also survived the collision of the RMS Olympic with the warship, the HMS Hawke.
It is hard to say whether there is any such thing as good or bad luck. Such things are beyond our ability to accurately measure to any meaningful degree, but most people can agree that there seem to definitely be those people who seem to be luckier or unluckier than most. These are the people who seem to defy all odds, bearing the brunt of all manner of things that can only be attributed to coincidence or luck. One person from history who seems to have been touched by fate to some degree is a woman who managed to be aboard several high seas disasters, which she survived and were notable enough that she has earned herself the title of “The Unsinkable Woman.”