Here's what we know about him:
* He is a renowned wandmaker known for his exceptional skill in crafting wands, particularly for those with powerful magic.
* He once owned the Elder Wand, the most powerful wand in existence. It is believed that he was its owner for decades before it was stolen from him by Gellert Grindelwald.
* He appears to be a very old man in the book and is described as having a "long, hooked nose" and "intense grey eyes".
* He is later killed by Grindelwald, who seeks to recover the Elder Wand.
It's worth noting that while he plays a role in the story, he never actually appears in the books, only being mentioned.