Should you seal the Duke in the tomb in Mina the Hollower?

In Mina the Hollower, you can find the Duke in Queensbury Crypt and escort him through the dungeon.

If you honor his wish to be buried in the family crypt, you get the Proto Spark trinket; refusing gives no reward.

The trinket can save you from one death, and the choice also unlocks a later story scene with a small narrative consequence.