If you want to pay for or pirate a font, there's of course Albertus. The best free (OFL) font I've found with a similar look is Della Respira, only a single-style font:

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I'm not sure how you plan on using a proportional font in the terminal, though.

Check out the font A028, which should be free and come in a couple of different weights.

You can have Albertus, there are several digitalizations, and some clones like Flareserif 821.

On a random note: Another person who is both a fellow Debian user AND even knows The Prisoner exists? How interesting.

Anyhow, be seeing you. 👁️👌