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| | DuBois Name |
 | | At this time, therefore, these barons and knights first began to transmit their family names, as well as their lands, to their posterity, and the name of an estate, inherited or acquired by marriage, was generally affixed to the original surname to distinguish the different branches of the same family. |
 | | He traces one of its branches, namely, that of "duBois duBais," from 1066 (at which time it was an old family), down to the present century, by regular descent from father to son, the original patronymic being unchanged throughout. |
 | | The prefix to a family name of "de," "de la," or of "du," which is a contraction of "de le," is universally admitted in France to be a badge of noble extraction. |
| www.dbfa.org /name_history.htm (1931 words) |
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