A couple had a child and called him "Incredible", because they thought he would do incredible things in his life. But the truth is that, far from being so, Incredible had a very dull and quiet life. He got married and was faithful to his wife during 60 years.
His friends always made fun of him because his name didn't match his lifestyle. So, before he died, he asked his wife not to write his name in the gravestone, in order to avoid further jokes after his death.
When he finally died, the wife followed his instructions, and just wrote on the gravestone: "Here lies a man who was faithful to his wife for 60 years."
When people passed by his tomb and read the epitaph, they said: "Incredible!"