Webster's Revised Unabridged Dictionary · 1913

Than

Than (tan) , conjunction

[Old English than, thon, then, thanne, thonne, thenne, than, then, Anglo-Saxon eanne, eonne, eaenne; akin to Dutch dan, Old High German danne, German dann then, denn than, for, Gothic þan then, and to English the, there, that. See That, and compare Then.]

A particle expressing comparison, used after certain adjectives and adverbs which express comparison or diversity, as more, better, other, otherwise, and the like. It is usually followed by the object compared in the nominative case. Sometimes, however, the object compared is placed in the objective case, and than is then considered by some grammarians as a preposition. Sometimes the object is expressed in a sentence, usually introduced by that; as, I would rather suffer than that you should want.
Behold, a greater than Solomon is here. — Matt. xii. 42
Which when Beelzebub perceived, than whom, Satan except, none higher sat. — Milton
It's wiser being good than bad; It's safer being meek than fierce; It's fitter being sane than mad. — R. Browning

Than , adverb

Then. See Then. [Obsolete] — Gower
Thanne longen folk to gon on pilgrimages. — Chaucer