Is Sam Tarly the only person in the current age to have killed a White Walker?

Question

Sam Tarly, a brother of the Night’s Watch, bravely stabbed a White Walker to protect Gilly and her "little monster" (unnamed in the books, if I recall). Sam's weapon of choice was a dragonglass dagger given to him by Jon Snow from a cache of weapons north of the Wall.

Since the Battle of Dawn, has no one else encountered a White Walker and survived? Has no other character been given the opportunity to try a dragonglass or Valyrian steel weapon?

I use only the books tag, I know in the show Lord Snow killed two (one at Hardhome and one in the wight hunting expedition) and Meera killed one with a dragonglass spear in the Three-Eye Raven cave.

Answer 1

Yes

In fact the Others haven’t been seen in centuries, the first time they resurface is in the prologue of A Game of Thrones and even then Gared is seen as a mad man rather than taken seriously.

Most people in Westeros don’t believe they ever existed and they are placed into the same sort of category as grumpkins.

Unique in the Seven Kingdoms is the Night's Watch, the sworn brotherhood that has defended the Wall over centuries and millennia, born in the aftermath of the Long Night, the generation-long winter that brought the Others down on the realms of men and nearly put an end to them.

The history of the Night's Watch is a long one. Tales still tell of the black knights of the Wall and their noble calling. But the Age of Heroes is long done, and the Others have not shown themselves in thousands of years, if indeed they ever existed.

_{The World of Ice and Fire, The Wall and Beyond: The Night’s Watch}