Knock Hill SSL R NO4316 1 363
Nydie Knock Hill 1828 SGF
Knock Hill 1855 OS 6 inch 1st edn [referring to hill]
en Knock + Sc hill
It seems to refer to a hill-side, rather than the whole hill, so not possible to give summit height.
OS Pathf. shows Knock Hill (hill), Knockhill Farm, Knockhill Quarries and Knockhill (settlement). Near to Knockhill Farm OS 1:10,000 also shows Knockhill of Nydie House.
This place-name appeared in printed volume 3