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Oxford Dictionary of National Biography
Henry Summerson, ‘Ballon , John de (d. 1235)’, first published Sept 2004, 430 words
http://dx.doi.org/10.1093/ref:odnb/960
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The Oxford Biography Index is an authoritative and accurate index of notable people – their names, their dates, and their fields of activity. |
Oxford Biography Index entry John de BallonBallon [Baalun], John de (d. 1235), baron
Oxford Biography Index Number 101000960 [what is this?] Full text available
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