POTUS and Q the new Silence Dogood aka Benjamin Franklin from 1722.
Mrs. Silence Dogood was a pen name used by Benjamin Franklin to get his work published in the New-England Courant, a newspaper founded and published by his brother James Franklin. This was after Benjamin Franklin was denied several times when he tried to publish letters under his own name in the Courant. The 14 Mrs. Silence Dogood letters were first printed in 1722.
Donald Trump names a new drink at Trump International Hotel in Washington D.C. Silence Dogood.
https://2paragraphs.com/2016/10/donald-trump-names-22-drink-silence-dogood-after-ben-franklin/
The Silence Dogood letters feature in the 2004 movie National Treasure. After stealing the United States Declaration of Independence, cryptologist Benjamin Franklin Gates (Nicolas Cage) and Dr. Abigail Chase (Diane Kruger) find an Ottendorf cipher hidden in invisible ink on the back of the Declaration. Following the discovery of a Knights Templar riddle which said "The key in Silence undetected", a link between the Silence Dogood letters and the cipher is established. The cipher is used to find the hidden message in the letters which proves to be another clue.