Questions about The Tale of Aragorn and Arwen

Short answers, pulled from the story.

When did J. R. R. Tolkien publish The Lord of the Rings and where is the story about Aragorn and Arwen located?

J. R. R. Tolkien published The Lord of the Rings in 1954 and 1955 with the tale of Aragorn and Arwen placed within its appendices rather than the main narrative.

Who wrote the account of Aragorn and Arwen after his death according to the fictional universe created by J. R. R. Tolkien?

The account of Aragorn and Arwen was written after Aragorn's death by Barahir, grandson of Faramir and Éowyn.

Where do Aragorn and Arwen plight their troth and when does their marriage take place?

Aragorn and Arwen plighted their troth at Cerin Amroth before marrying at midsummer in Minas Tirith while the Third Age ends with Elrond's departure.

What medieval poem inspired Tolkien to write the story of Aragorn and Arwen?

Elena Capra writes that Tolkien drew inspiration from the medieval poem Sir Orfeo based on classical tales of Orpheus and Eurydice.

How did Peter Jackson change the placement of the tale about Aragorn and Arwen in his film trilogy compared to the book?

Peter Jackson brought the tale from appendix into main narrative within his film trilogy strategically placed almost exactly halfway through.