Katherine Duer MacKay was the wife of mining magnate Clarence H Mackay, an author and a member of the notable Duer family of New York. - AsNotedIn
| Y/M/D | Description | Association | Composition | Place | Locale | Food | Event |
|---|---|---|---|---|---|---|---|
| Y/M/D | Description | Association | Composition | Place | Locale | Food | Event |
| 1903/03/22 | Katherine Duer MacKay gives birth to Ellin Mackay at the famaly's $6 million estate in Roslyn, Long Island (razed, Harbor Hill). | Mother | Mackay Estate Gate Lodge | Town of Oyster Bay, NY | |||
| 1904/00/00 | "The Stone of Destiny" by Katherine Duer Mackay is published. | Author |
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