The pattern is Romantic Heart - with Directions by Beelizabeth. I recently learned about this pattern via the InTatters website. Specifically this series of posts. If you are not a member of InTatters, I encourage you to check it out. It is an interactive website for tatters of skill levels.
The pattern can be found here.
It was made using HDT thread I already had wrapped onto a yarn daisy. I can't tell you the thread size or name or who the dyer was because, of course, I didn't have any thread info attached to it.
The lovely Matilda showing you my HDT version of Birgit's Romantic Heart.