The stitch today is a member of the Chain Family, who like so many others has married into the Knot Family.
It is easy to confuse the Knotted Chain Stitch with French Knotted Chain Stitch, (Sunday Stitch School #63), which is a true combination of a French Knot and a Chain Stitch.
Neither is today's stitch to be confused with Knotted Cable Chain Stitch, which was one of the TAST stitches on Sharon Boggon's Pintangle. Both the working and the result are different, though.
Mattia has supplied me with the French name: point de chainette noué.
I found the Knotted Chain Stitch on Mary Corbet's Needle 'n Thread. Her instructions are as always clear and well worth checking out.
However, I have made my own:
The important thing is to make this loop.
either by wrapping the thread around your finger, which is Mary Corbet's way,
or around the needle, a method I like better.
Place the needle on top of the thread,
then twist the thread so it goes underneath, like you can see in the picture.
Anchor the needle next to where the thread came out.
Tighten the thread into a knot around the needle.
Pivot the needle to make the first Knot and the first Chain Stitch.
Make sure to keep the thread to the right of the needle.
Make a new loop,
tighten it into a knot,
Then make the second Chain Stitch
Continue until you have a nice line of Knotted Chain stitches.
Work Knotted Chain Stitch on these three samplers