Eversholt was metioned in the Domesday Book.
The original book is hard to understand, but various transcripts exist. Here are two – I hope they agree!
A Digest of the Domesday of Bedfordshire by William Airy was published in 1881. Much thanks to archive.org for putting it online.
Quarto memoirs, Bedfordshire Historical Record Society from 1922 is out of copyright and transcribed the data. Thanks to archive.org for putting it online!
Here are the entries for Eversholt: (click for larger versions)
Here are the notes that explain what those various columns mean:
Plus there is this additional note: