Although the title indicates that the author of this grimoire is the biblical King Solomon, it was probably written in the 13th Century A.D. S. Liddell MacGregor Mathers translated it in English in 1888. Mathers, a key-influencer of the Golden, is said to have modified the rituals with W.B. Yeats. Mathers also translated the Kabbalah.
Legemeton
Also attributed to King Solomon and probably the most well known Grimoire, the Legemeton is a collection of medieval and post-medieval grimoires that originated in the twelfth century. The name Lemegeton probably stems from the compiler's ignorance of Latin. Inspiring from the Clavicula Salomonis (Key of Solomon), the "Little Key of Solomon" was dubbed "Lemegeton Clavicula Salomonis."
http://demons.monstrous.com/grimoires.htm
I have no idea of how true any of the above is, but after trying to read some it, it appears to be badly written junk.
From CHAPTER XV
OF THE EXPERIMENT OF SEEKING FAVOUR AND LOVE
This being said, thou shalt place it in clean silk, and bury it for a day and a night at the junction of four cross-roads; and whensoever thou wishest to obtain any grace or favour from any, take it, having first properly consecrated it according to the rule, and place it in thy right hand, and seek thou what thou wilt it shall not be denied thee. But if thou doest not the Experiment carefully and rightly, assuredly thou shalt not succeed in any manner
Yeah. Right.
P