Where does wardrobe originate from?

If you're asking about how the wardrobe was made, then this is a brief answer.

In the Magician's Nephew, Professor Digory and his friend, Polly Plummer, acquired a few rings which can transport you to a forest of pools/ponds. After their adventures, they come back to our world and agree to bury the rings so no one will find them. As everything from Narnia grows, the rings end up growing into a magnificent tree and from the tree, Professor Digory got the wood to make the wardrobe.