The following abbreviations are used within in the text of CIRCLE
- abp = archbishop [of]
- BMV = beate Marie Virginis [of the Blessed Virgin Mary]
- C. = chancellor [plural: chancellors]
- co. = county (i.e. medieval shire: lower case ‘c’) [plural. cos.]
- dcd = deceased
- e. = earl of
- Edw. = Edward (used when giving dates by regnal year)
- Eng. = England
- esq. = esquire [plural: esquires]
- Ex. = exchequer
- g.s. = great seal
- Hen. = Henry
- Ire. = Ireland
- Jcr = justiciar [plural: justiciars]
- JP = justice of the peace
- K. = king
- kt = knight
- Lt = lieutenant
- O.Carm. = Order of Carmelites
- O.F.M. = Order of Friars Minor (Franciscans)
- O.P. = Order of Preachers (Dominicans)
- Ric. = Richard (used when giving dates by regnal year)
- s. = son
- sen. = seneschal of
- T. = treasurer [plural: treasurers]
- w. = wife
