The Constitutio domus regis (or Establishment of the King's Household), was a handbook written around 1136 that discussed the running of the household of King Henry I of England, as it was in the last years of Henry's reign. It was probably written for the new king, Stephen. It gives what every officer and member of the household should be paid, what other allowances they should be given, as well as listing all offices in the household. It is likely that the author of the work was Nigel who was treasurer under Henry I and became Bishop of Ely in 1133, although this is not accepted by all historians.