Stamboom Marijnissen
Family: Robert Vii de B?ethune / Elisabeth de Morialmes (F3060)
Willem Iii van B?ethune ( -1214) 
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Machteld van Dendermonde ( -1224)
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| Robert Vii de B?ethune ( -1248)
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Mathilde de B?ethune (1231-1264)  |
| Elisabeth de B?ethune ( -1299) |