Wikipedia
Callendar
Callendar is a title of Scottish nobility and a surname. It may refer to:
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Earl of Callendar
- Callendar House, Falkirk
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Guy Stewart Callendar (1898 – 1964), English steam engineer and inventor and son of Hugh Longbourne Callendar
- Callendar effect
- Hugh Longbourne Callendar (1863 – 1930), British physicist and father of Guy Stewart Callendar