The name “Old Knock” is a take-off of a nick-name for one William T. Kirkpatrick, given to him by the author C.S. Lewis. Kirkaptrick, Lewis’s tutor, was affectionately monikered “The Great Knock”.
Old Knocks, while not necessarily “great”, are not necessarily “old” either. They could, very likely, be clumped together with that ever-growing group termed “Young Fogeys”. However, the latter term has been expanded to such a degree that it is actually meaningless—typical of such sociological groupings. The Old Knocks share a love of the classic (and classical) with the Young Fogeys. However, the Old Knocks are slightly less interested in the extravagant stylings (i.e. Dandyism) that seem to have over-powered this once more conservative group. Instead, the Old Knocks prefer to pursue their own eccentric passions—typically of an intellectual nature—far from the madding crowd. Old Knocks tend to be a bit reclusive, preferring to hide away with dusty books and paintings in a dusty attic, than sitting in a fashionable café (or riding in a bicycle mob), creating a scene.
To assume that all Old Knocks share the same passion or area of interest would be a mistake. What unites them is not what they are passionate about, but the fact that they all have a passion, and that the passion tends to fall under the “classical” heading. Whether it be Literature, Music, Painting, Architecture, History, etc., the area of interest and expertise is what unites them.
But, it would also be a mistake to assume that Old Knocks are entirely uninterested in material preoccupations as well. Again, it would be unjust to put parameters on an Old Knock’s material interest, but, as with their area(s) of expertise, they would be interested in things of the past. This gets at the very heart of the Old Knock. Old Knocks are Romantics. Like the Young Fogeys, the Trads and any other “Reminiscent Culture” group that seeks their inspiration from a by-gone era, the Old Knocks long for an apparently simpler, more comfortable time. Like the Young Fogeys, they tend to emulate the earlier quarter to half of the 20th century.