"The lineage of the name Seabright begins with the Anglo-Saxon tribes in Britain. It is a result of when they lived in Sebright in the county of Essex which was later known as Great Seabright in Great Beddow in Essex. This surname is also of patronymic origin in that it was originally derived from the baptismal name Seabert, taken from the Old English personal name Saebeorht. Baptismal names began to appear as surnames relatively late in the growth of the naming tradition. This is a little surprising, given the popularity of biblical figures in the Christian countries of Europe. Nevertheless, surnames derived from baptismal names grew in popularity during the Middle Ages, and have become one of the foremost sources for surnames.
"Spelling variations include: Seabright, Sebright, Seabricks, Sebricks and others.
"First found in Essex where they were seated from early times and their first records appeared on the census rolls taken by the ancient Kings of Britain to determine the rate of taxation of their subjects."