I suspect the real name is shilbottle
I suspect the real name is shilbottle
From Wiki-
Graffiti
In recent years, roadsigns to the village have been altered by the method of 'crossing' the first 'l' in 'shilbottle' to make it appear as a 't' on roadsigns, thus making it be confused with Blyth. Although signs have been restored and replaced over the years, this continues to be a problem.