This is a family-level holding entry because the accessible summary does not identify the individual Brus holder.

Research sources:
- Aislaby, Scarborough historical summary, citing William Page, A History of the County of York: North Riding, volume 2, pp. 506-528; contextual discussion of Brus landholding in Ruth M. Blakely, The Brus Family in England and Scotland 1100-c.1290. — https://en.wikipedia.org/wiki/Aislaby%2C_Scarborough