This song is off of the Decemberist's 2005 album Picaresque, and it's a quintessential four-chord sad story song that is fairly easy when played with 1-Finger, or a bit more of a challenge when using the Multi-Finger style.
And if you're interested in learning a LOT more about dulcimer guitar chords, please check out the Complete Chord Guide. It offers options on different chord types, versions you could use instead of the ones I suggest, as well as the why's and how's of playing (technique). I think you'll like it.
This version is for D-Tuned stick dulcimer guitars. If you'd like to play it in another key, check out the Free Dulcimer Key Change Guide.
And if you haven't seen them, we have an ever-growing set of other Dulcimer TABs Song Guides! Check them out.
In the video, you’ll learn what all of the chords look and sound like, as well as why they are what they are since there are several substitutions here.