Jove rules th' ethereal sky, the Triform world; And all the earth beneath Augustus lies: Each is the sire and ruler of his realm.
"The Metamorphoses of Publius Ovidus Naso in English blank verse Vols. I & II"
Ovid
And as in glass, in amber, or in crystal A sunbeam flashes so, that from its coming To its full being is no interval, So from its Lord did the Triform effect Ray forth into its being all together, Without discrimination of beginning.
"Divine-Comedy-Longfellow-s-Translation-Complete"
Dante Alighieri
Galileo perceived that Saturn presented a Triform appearance, and that, instead of one body, there were three, all in a straight line, and apparently in contact with each other, the middle one being larger than the two lateral ones.
"The Astronomy of Milton's 'Paradise Lost'"
Thomas Orchard