[Facts] Re: is there a possibility that these birth records are fake? (Birth Records for England and Wales in 1877)
I wouldn't cite this as a source or reproduce this list anywhere, since they don't cite their source properly, but it seems fairly plausible. I don't see why they would make this up. They mention cross-referencing some records and the fun facts at the bottom gives it some extra legitimacy, IMO. They've obviously picked out the weirder names from a much longer list. I wish they gave more details on the source and which cities/counties the names come from, although I'm sure that information is possible to find if you're willing to do some digging. Your best bet would probably be in online genealogy archives.
I've been reading a French book about baby names that covers that period and more (Le manuel des prénoms by Edouard Lévy, 1922 - the first part covers from the early 1800s until 1921, the second part zooms in on the 1790s). There's the same amount of wonderful weirdness, with the caveat that the author is specifically picking out extreme examples to illustrate various points.