Character
Mary Holder
- Average age: 27 years
- Wikipedia: Mary Holder (link not verified)
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May 1892: 'The Adventure of the Beryl Coronet' -
1921: 'The Beryl Coronet' -
10 Apr 1965: 'The Beryl Coronet' -
11 Feb 1968: 'Das Beryll-Diadem' The Beryl Coronet -
30 Jan 1991: 'The Beryl Coronet'