Steeley
After some extensive checking around, I can only find references to this being called Threenook. The OS Open Data also references Threenook as does various council references, though these could all be referring off one another.

The only suggestion it may be Treeneuk is the street names to the south.

In any case, added as a note that it may be called Treeneuk but won't change without a more definitive reference, and resolving as nothing else that can be done.