Correct. King Azaghal of the
Dwarves wore it first, then he gifted it to
Maedhros, Maedhros to
Fingon, Fingon to Hador, and then from Hador down through his descendants to
Túrin. Túrin is his great-grandson, I believe?
I think this is what I’ve read before (possibly on the Wiki here) about the
Dragon Helm’s history, but I don’t know if the source was entirely correct or not.
The exact design of the famed
helm may vary from artist to artist, but it should always have a
dragon adorned on top (supposedly
Glaurung), and feature a Dwarvish-made appearance, striking fear into the foes of the wearer.