The interesting 'Descriptio militum de Abbatia de Burgo' is found in the same MS. as the Northamptonshire Geld-roll.[1] It was printed by Stapleton in the appendix to his _Chronicon Petroburgense_ (pp. 168-75),[2] but no attempt was made to date it. The name of Eudo Dapifer proves that it cannot have been compiled later than 1120. On the other hand, it cannot well be earlier than 1100, for some of the Domesday tenants had been succeeded by their sons--Robert (?) Marmion, for instance, by Roger, and Coleswegen by Picot--while the mention of 'Gislebertus filius Ricardi', possibly the son of Richard of 'Wodeford' (i. 224_b_), points in the same direction. As the majority of names, however, seem to be those of Domesday tenants, it is probable that the list is not later than the Lindsey survey itself, if, indeed, it is not earlier. The first entry it contains is a good specimen of its value: Asketillus de Sancto Medardo tenet de abbatia de Burch in Hamtonascira x. hidas et iii. partes i. virgæ, et in Lincolnescira iii. carrucatas et inde servit se vi. milite. Et de feudo hujus militis dedit rex Willelmus senior Eudoni Dapifero in Estona hidam et dimidiam et mandavit de Normannia in Angliam Episcopo Constantiarum et R. de Oilli per breves suos ut inde darent ei excambium ad valens in quocumque vellet de iii. vicinis comitatibus; sed abbas noluit. We duly find 'Anschitillus' in Domesday, holding 'Witheringham', Northants and 'Osgodeby', Linc., of the Abbot (i. 221_b_, 345_b_). In the same way we are enabled to identify the 'Rogerius Infans' of our list with 'Rogerius' who held 'Pilchetone', according to Domesday (i. 221_b_), of the Abbot, 'Ascelinus de Waltervilla' with the 'Azelinus' of Domesday (_ibid._), 'Gosfridus nepos Abbatis', with 'Goisfridus' who held in 'Sudtorp' (_ibid._), and 'Rogerius Malfed' with that 'Rogerius' who held of the Abbot at Woodford (i. 222). 'Rogerus', on the other hand, who held in Domesday two hides at Milton, Northants (i. 221_b_), and seven bovates at Cleatham, Linc. (i. 346), is represented in our list by the entry: Turoldus de Meletona ii. hidas in Hamtonascira, et in Lindeseia vi. bovatas, et inde servit se altero milite (p. 171). The chief lesson taught us here is the rashness of assuming the identity of tenants happening to bear the same name. For even among the few who are named as holding of the Abbot of Peterborough, we have found three Rogers quite distinct from one another. The entries which follow are of value as absolute proofs of succession: DOMESDAY DESCRIPTIO MILITUM In Dailintone tenet Ricardus de Rodbertus filius Ricardi iiii. abbate iiii^{or.} hidas (i. 222). hidas in Hamtonascira, et inde servit se altero milite (p. 175).