The origin of the name "Bolsterstone" is unknown; it may a corruption of the root word "Walder" (also used in local place names, including a barrow), or may refer to two large stones in the village, which are referred to as the "Bolster Stones".
It is uncertain how "Bolsterstone" got its name; it may stem from a misspelling of "Walder," used in other local place names, or it might be named after two significant stones located within the village known as the "Bolster Stones."