As Stated in the Introduction (Which i hope you read. I didnt write that for it to be skimmed through. If you hadn't read it, go back and do so. Don't worry, I'll wait.)

Ahem. As I was saying, As stated in the Introduction, The Study of Wands has been around for over two thousand years. They date back all the way to the first Wizards in History. No one is quite sure what gave the original wizards the idea to use sticks as catalysts for their magic potential, but there have been some theories as to why.

The currently accepted theory for the origins of wands is shared with the muggle concept of "Wizard Staffs". It is theorized that ancient wizards noticed that their walking sticks increased their magical abilities when made from a specific type of wood. from there, they try to increase that boost by attaching charms or quartz crystals. Eventually, by trying to make their staves more portable and less unwieldy, Wizards created Wands. 

Through the Years Wandlore has been expanded. Wandmakers had discovered that the most powerful way to increase the "oomph" of the wand was to imbed a magical item within it. The most powerful of those magical items, always came directly from a magical creature: A Feather of a Phoenix, the Tail Hair of a Unicorn, a Heart String of a Dragon. These rare ingredients greatly increased a wizard's power. It is also believed that the discovery of these eventual Wand Cores were discovered separately as magic charms, rather than only used as Wand cores.

As Wandlore expanded, so did the need for it to be regulated. Darker Wand Cores like Acromatula Web and Chimera Scale increased the power of dark magic drastically, and were very popular choices in the dark ages (go figure). As such, a lot of those cores were made illegal in certain countries.

In 1947 a wandmaker in America by the name of Albert Richmond decided to start tempering with the common makeup of wands. Through many trials and a lot of backfired wands, Richmond had created the first Dual-Cored wand of Aethonon Feather and Demiguise Hair. The result created a much more powerful wand than would a single core. However with this discovery there were many costs. Turns out, a duel-cored wand proved to be very "Disobedient" and very temperamental  a few years after his success, Richmond was killed when his wand backfired. Violently. Since then, Wandmakers were always careful when using two Wand Cores, always doing advanced research to find the perfect matches to balance the two cores.