If you are reading this letter it's obvious that something has happened to me. As Gringotts and the bank in Venezuela are handling the affairs of my estate, I left this note in their care to be delivered upon my death.
You were kind, far more kind than those of closer blood and for that I thank you. I have ear-marked a sizable portion of money to be held in trust to your firstborn, delivered in full upon their seventeenth birthday. Enclosed, you will find a bank certificate verifying this as well as a key.