page_title: John Cay
hierarchical_section_title: John Cay
caption_attribution_description: English: Early calotype of John Cay by Hill &amp; Adamson c.1850
context_page_description: John Lidell Cay FRSE PRSSA was a Scottish advocate, pioneer photographer and antiquarian. He served as the Sheriff of Linlithgowshire 1822–65. He was the maternal uncle of James Clerk Maxwell.
  He was an original member of the Edinburgh Calotype Club, one of the world's first photographic clubs, and a keen early photographer alongside his friend Sir David Brewster and the Edinburgh pioneers David Octavius Hill and Robert Adamson. He made very early photographic presentations to the Royal Scottish Society of Arts.
context_section_description: John Lidell Cay FRSE PRSSA (31 August 1790 – 13 December 1865) was a Scottish advocate, pioneer photographer and antiquarian. He served as the Sheriff of Linlithgowshire 1822–65. He was the maternal uncle of James Clerk Maxwell.
  He was an original member of the Edinburgh Calotype Club, one of the world's first photographic clubs (1843), and a keen early photographer alongside his friend Sir David Brewster and the Edinburgh pioneers David Octavius Hill and Robert Adamson. He made very early photographic presentations to the Royal Scottish Society of Arts.
caption: Early calotype of John Cay by Hill & Adamson c. 1850
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