Member Information
| Full Name |  William Crispin I -  |
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| Birth | #1 | Date of Birth | 1040 |
| Father | Gilbert Crispin I, baron of Tillieres | ||
| Mother | Gunnora D'Aunou | ||
| Siblings |
Gilbert Crispin, Baron of Bec,  Elise Hesilla FitzGilbert Crispin
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| Spouse | #1 | Name | Eva de Montfort |
| Children | Gilbert Crispin Abbot of Westminster, William Crispin II | ||
| Death | #1 | Date of death | 8 JAN 1074 |