An old pattern in overshot weaving that has had many names over time: Muscadine Hills, Hickory Leaf, Blooming Leaf. The Double Bow Knot name comes from the leaf like square that forms the larger portion of the design. The dark square is called a table. Because there are two motifs used the pattern it may be most properly described as a Double Bow Knot and table design.
This design can be woven with only four shafts in an overshot structure. Overshot blocks can share shafts, which is what makes them so efficient. It is a structure that will require you to have planned your design carefully before you thread your loom. The threading typically is the most limiting design factor.