#OTD in 1818.
Lord Byron, in Venice, sends the final part of Childe Harold to his publisher.
The poem contains elements thought to be autobiographical, as Byron generated some of the storyline from experience gained during his travels through Portugal, the Mediterranean and Aegean Sea between 1809 and 1811.
https://en.wikipedia.org/wiki/Childe_Harold%27s_Pilgrimage
Childe Harold's Pilgrimage at PG:
https://gutenberg.org/ebooks/5131