Mary Keir
British supercentenarian
About Mary Keir
Lived 1912 – 2024 (aged 112).
Mary Keir (3 March 1912 – 17 December 2024) was a Welsh supercentenarian who, until her death, was the oldest living person in Wales and the second oldest living person in the United Kingdom, after Ethel Caterham.
Biography Keir was born in St Davids, Pembrokeshire.
At age 21 she moved to Cardiff to work at Llandough Hospital where she worked as a ward sister. She worked in the hospital during World War II and survived the Cardiff Blitz. After meeting her husband Douglas, she moved to Llansteffan, Carmarthenshire, where she worked as a ward sister and district nurse. She lived in Llansteffan independently until just before her 100th birthday.
Keir lived at Awel Tywi Residential Home in Llandeilo, Carmarthenshire for 12 years until her death. She enjoyed music and was a pianist. She was survived by her son.
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Important facts
People in Mary Keir's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Mary Keir's
Frequently asked questions
Who was Mary Keir?
British supercentenarian
When was Mary Keir born?
Mary Keir was born on 3 March 1912 in St Davids.
When did Mary Keir die?
Mary Keir died on 17 December 2024 in Llandeilo.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Mary Keir. https://biography.guide/mary-keir/
MLA: "Mary Keir." Biography.guide, https://biography.guide/mary-keir/.
Chicago: "Mary Keir." Biography.guide. https://biography.guide/mary-keir/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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