As stated here by Josh, Aime Paris created the modern version of the Major System, even though such systems have existed in some form centuries before. While reading one of the Major’s books called Major Beniowski’s Phrenotypics, I found a passage that confirms that the Major knew and personally learned from Paris himself.
In 1832 , we followed a course of lectures delivered at Paris , by Mr. Aimé Paris , to whom we gratefully acknowledge to be indebted for many a mnemonic contrivance ; but more so , for having encouraged us , by his example and precepts , to pursue this kind of study , which , although we had the good fortune to hit upon by chance , and follow from our early infancy , we had not boldness enough to rely upon with sufficient confidence ; being diverted , but too often , by the observations of those for whom everything new appears ridiculous , impossible , or injurious .
Though it was always obvious that the Major was influenced by Paris in some form, it’s nice to see some confirmation of this fact on the Major’s part.