Grantham is a surname of English origin, derived from a place name. It refers to an individual who came from the town of Grantham in Lincolnshire, England. The town's name is believed to mean "farmstead on the granary" or "settlement on the granary," derived from the Old English words 'grand' meaning grain and '-ham,' a settlement suffix. This surname was first recorded during the reign of King John (1199-1216) when a certain William de Grantham appeared in the Pipe Rolls of Lincolnshire. Today, Grantham is still primarily found in England, with some occurrences in other English-speaking countries due to migration patterns over centuries.
"Over the span of nearly three decades (1990-2019), the name Grantham experienced fluctuating popularity with a total of 215 babies being named Grantham during this period."