In Red Shadows, Solomon Kane carves the initials "S.L.K." into the bandit Jean's face. To wit:
"The first we know of this man is when we find Jean, the most desperate bandit unhung, nailed to a tree with his own dagger through his breast, and the letters s.l.k. carved upon his dead cheeks. Then the Spaniard Juan is struck down, and after we find him he lives long enough to tell us that the slayer is an Englishman, Solomon Kane, who has sworn to destroy our entire band!"
The English Puritans of Solomon's era (ie, the Elizabethan period and earlier) were not much given to middle names. However, that doesn't mean that SK's parents couldn't have given him one for whatever reason. They were probably headstrong and peculiar, like their child.
I guess I killed this thread when I mentioned he whose name must not be spoken!!
At least you didn't say Lollipop! His face grim, Solomon Kane strode into the hostel, glaring icy daggers at the ale-guzzlers. Making his way to the bar where the innkeep and his plump wife were filling bowls with mutton stew, he sunk onto a wooden stool. "Stew," he muttered, his distant voice recalling chill, wintry winds. His eyes were staring at dark figures in his mind only he could see. Turning at his voice, the keep's wife beamed. "Lollipop - gimme some sugar! Henry, get a clean bowl!"