ETYMOLOGY
from Latin salsipotentem, a false reading for salipotentem,
from salum (salt water) + potentem (having great authority or influence)
EXAMPLE
“…whearunto he made hiz fish to swim the swifter, and hy then declared: how the supream salsipotent Monarch Neptune, the great God of the swelling Seaz, Prins of profunditees, and Soouerain Segnior of all Lakez, freshwaterz, Riuerz, Créekes, and Goolphs…”
From: A Letter whearin part of the Entertainment vntoo the Queenz Maiesty at Killingwoorth Castl in Warwik Sheer
By William Patten, a1578
Lexicophilia 