Robert the Lotharingian[a] (died 26 June 1095) was a priest who became Bishop of Hereford following the Norman Conquest of England.
His writings serve as one of the best sources for information on the process of compiling the Domesday Book, and he may have introduced the abacus to England.
[5] King William the Conqueror's appointment of Robert was somewhat unusual, not just because he was not a Norman, but because he was not a religious scholar, and was instead an astronomer and mathematician.
[11] It may be that Robert gave Wulfstan a copy of Marianus' chronicle, which allowed the monks at Worcester to use it in their own works.
[15] Robert was present at the Council of Rockingham in February 1095, which dealt with the conflict between King William II of England and Anselm, the Archbishop of Canterbury.