Christmas horror
... that an early example of the genre of Christmas horror is A Christmas Carol, published in 1843?
... that an early example of the genre of <b id="mw-Q"><a href="./Christmas_horror" id="mw-g" rel="mw:WikiLink" title="Christmas horror">Christmas horror</a></b> is <i id="mw-w"><a href="./A_Christmas_Carol" id="mw_A" rel="mw:WikiLink" title="A Christmas Carol">A Christmas Carol</a></i>, published in 1843?