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According to Wikipedia, the name 'Calder' is thought to come from the early Common Brittonic, meaning 'hard or violent water' (the modern Welsh word for hard is "caled"), or possibly 'stony river'. It is found as a place name throughout Scotland. For example, East Calder and West Calder that are both near Edinburgh, and also Calderwood near Glasgow.
Historian William Anderson asserted that the name came to prominence in Scotland through a French knight called Hugo de Cadella, who was created Thane of Calder, later known as Cawdor. The historian George Fraser Black lists Hugo de Kaledouer as a witness to a charter of land near Montrose in around 1178. However, the name arose around Inverness where the Calders were great nobles with considerable lands from the fourteenth century onwards. The third Calder, Thane of Cawdor was however murdered by Sir Alexander Rait of nearby Rait Castle. You can read much more by going to https://en.wikipedia.org/wiki/Clan_Calder