Being in Britain I will point out some obvious history the author is ignorant of, before the Victorian age of tea drinking the common way of partaking of fluids was light or small beer(you drank the well water at your own risk), in fact right into the Edwardian age. The pub was not what it became which was a large social building, that was the coach inn and they were only on roads. Most pubs were converted houses hence public house. They were more common than shops which mostly arrived in the 1700′s, cities such as Chester had them a century earlier and were where you had lunch if it was an Inn. Evening meal in the industrial age was at the local chip shop of which nearly every street had one from town to cities. Pubs were therefore as or more numerous than stars in the sky, each had to be named and there are only so many names to go around, you can cherry pick similar surviving names from the surviving pubs similar to constellations, however these are English names, not Latin and I will point out every single one of which is found of Feudal house coats of arms therefore the original named pub was on the estates of one house with that motif, and coats of arms had shared devices. The three kings may have been founded one Christmas or had been visited by a monarch and his sons under a different name, we also have pub names such as the Boatman, Lawrence arms (pubs named after people), and churches had pubs too – Bishop Blaze etc. I recommend a bit of Arthur Conan doyle reasoning. The raven is also a common pub name – in the North of England which was invaded and settled by Danes(not therefore corvus) and my local which was abandoned in 1995 was built on the lands once owned by the stannies a surviving Pre Norman Dane lordship which had most of Cheshire who were responsible for the defeat of Richard of York in 1485. Their Shield motif was 3 ravens.