Wandlore
Chestnut is a most curious wood that little character or traits of its own other than its attraction to witches and wizards who are skilled tamers of magical beasts, those who possess great gifts in Herbology, and those who are natural fliers. Instead, the wand of chestnut tends to take on character of the wand core and the owner.[2]
For example, when paired with dragon heartstring, chestnut wands may find their best match among those who are overfond of luxury and material things, and less scrupulous than they should be about how they are obtained. Conversely, three successive heads of the Wizengamot have possessed chestnut and unicorn wands, for this combination shows a predilection for those concerned with all manner of justice.[2]