"A son cruelly banished
Despair of the daughter
Return, great avenger
With wings from the water."
—Prophecy 20 by Tycho Dodonus
The Predictions of Tycho Dodonus was a book published before 1927 in which the author, Tycho Dodonus, put forth a number of poetic prophecies.
Many in the Wizarding community were familiar with the book including Albus Dumbledore, Yusuf Kama, Porpentina Goldstein, and Torquil Travers (CG).
One noteworthy prediction, known as Prophecy 20, may have implicated Leta Lestrange, Corvus Lestrange, Yusuf Kama, and Credence Barebone. Speculation runs rife as to the true meaning of the prophecy but only further developments in the series will reveal the truth.