Dragons in Mythology, Legends, & Lore

There are plenty of books out there which talk about dragon mythology and lore, but most of them talk only about the most common dragons. I am currently gathering information about those dragons that are not as well known for a "little" side project. Especially dragons which have a relation to rather unknown places such as small or remote villages, towns and so on.

It's a project I wanted to tackle for many years now, but real life was and still is keeping me busy. However I still want to give it a shot. I can't give you much info on what my plans are, but I can tell you that much: The project heavily relies on the input of others. As in: Submissions of mentioned lore/legends and mythology that is rather unknown to the wide audience. 
Where I live, we have some folklore that is more or less known to the locals but unknown to people in my home country in general.  

If you have some of these historic pieces to share please fill out this form: https://forms.gle/uqbRGQTjKHdLXa7A6

I highly appreciate every contribution to this project.
Some points are optional such as providing links to images.
If you don't have any direct links to sources or are able to copy the original text into this form please try to describe it as detailed as possible.
Especially location and appearance of the dragon(s) are important for this project!
You can also refer to poems and songs!

There is no restriction to how old the content you are providing has to be. So it can be as old as mankind or more recent. Just make sure it is tied to real life events or locations.