John De Baun | |
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| Born | 19 January 1852 New Jersey, USA |
| Died | 24 December 1911 (aged 59) Perth, Western Australia |
| Occupation(s) | Real estate developer, hotelier, mining investor |
| Spouse | Ada Williams |
| Relatives | Samuel (brother), William (brother), Albert H. (brother) |
John De Baun (1852–1912) was an American-born Australian real estate developer, hotelier and mining investor.