Blaylock
A likely English surname, probably built from a place-name or local dialect form, though the exact origin is not securely established in the excerpted sources.
The #3,563 most common surname in the United States (2010 Census) — about 1 in every 30,850 Americans shares it.
Etymology
The surname Blaylock is not securely explained by the excerpt provided. In English surname studies it is usually treated as a place-name type or a regional form built from older local words, but the precise root is debated and not firmly settled by this source alone. The final element -lock may reflect an old topographic or dialectal ending, while Blay- could be related to a descriptive word for color or terrain, but that remains tentative.
History
The name appears in English-language surname records and is now best known in Britain and the United States. In modern usage it is established as a hereditary family name rather than a common word-name, and it has spread through migration to North America. The single excerpt here is only an incidental mention, so it does not provide enough evidence for a more detailed historical account.
Origin
Regions
Variant spellings
Fun fact
Blaylock is uncommon enough that small changes in spelling can matter a lot in family-history research.