Or, one ancestor got rich through hard work, or through the hard work of others.
I’m currently reading Dickens’ “A Child’s History of England” and he mentions that there are currently (at the time of his writing, 1850’s) many wealthy families in the UK that can trace their ancestry (and wealth) back to the Norman Invasion when William killed most all the English nobles and distributed their estates to his Norman knights, and are quite proud of it!...................