Obviously, Christmas stories have been around far longer than Peanuts specials. "Twas the Night Before Christmas" was from the late 1800s. And of course, the Christian part of the story goes back ~2000 years.
I was thinking in terms of specials, as stated in the previous person's post. And, also obviously, having a little fun with the idea.
i meant in comics not all stories.
You're absolutely right - even in comics (whether comic strip, like Peanuts primarily was, or comic books) Christmas stories appeared long before the 1960s.
However, note my reference to "Peanuts specials." I was explicitly referring to the Peanuts TV holiday specials. Even there, A Charlie Brown Christmas isn't the first - I see a reference to a Disney Christmas special televised in 1950, and Mr Magoo's Christmas Carol being the first animated special, airing in 1962. Even just considering what would be the longest running/best remembered specials show Rudolph the Red-Nosed Reindeer debuting in 1964, with Charlie not showing up until 1965.
Still, when it comes to long-running holiday specials featuring characters who appear throughout the year, and characters who have both Christmas and Halloween TV specials, i do think the Peanuts specials are what most people will think of first.
And, again, it was a quick, silly joke of a comment on my part (after all, you were clearly talking about holiday specials for adult VNs).
Shutting up now