The actual use of the FLEUR DE LIS [FLOWER OF THE LILY]checkering element; [there is no such thing as "FDL CHECKERING"] as best as I have been able to trace, goes back to its' use on dueling pistols and then early long guns symbolic of the French Bourbon Kings. Its' major modern proponent, and one of those most likely responsible for bringing it into its' wide use in the late 1920's and early 1930's, in the form we know it, is Lenard Brownell of Sheridan Wyoming. He was designer of the original 77 Ruger stock [recently screwed up by Ruger] and the Ruger NO.1 stock and a lot of the exterior metalwork and internals included. He stocked many guns for Hollywood Stars [Clark Gable,Gary Cooper] and Studio Heads [Daryl F. Zanuck] and August and Frank Pachmayr began using it as did King Gun Shop.Fred Adolph used it early as well but it was a common element on Schuetzen rifles. When you say "in the history of bolt action guns" I'm presupposing you mean WHO FIRST USED THEM ON THEIR GUNS, THEY BUILT AND CHECKERED? ANSWER: WE'LL NEVER KNOW. Probably someone back east. However it was Lenard Brownell who spread their prolific use through gunwriters, other gunsmiths and movie stars and their West Coast gunmakers, then these monied types returned east to G&H AND HAD RIFLES BUILT! Hope this helps! Warmest Regards Jerry