Catshead is one of the oldest apples known in England.  The name comes from its alleged resemblance to a cat's head - perhaps not immediately obvious, although the shape is unusually conical and can be ribbed.
 
Like most old English apples Catshead is primarily a culinary apple.  The flesh is juicy with a fair amount of acidity, but does not need much additional sugar when cooking.  It cooks down to a puree.
 
https://www.orangepippin.com/varieties/apples/catshead