I recently had cause to use the following authority record. I plan on updating the record and removing the 667 note but I am not sure about the capitalization rules regarding the royalty term "baron". I noticed when searching the naf that sometimes the term is capitalized and sometimes it's not. I couldn't find an RDA rule or explanation regarding when it should be capitalized and when it shouldn't be. Any help would be appreciated. Thanks.
010 n 50023126040 DLC ǂb eng ǂc DLC ǂd DLC ǂd Uk ǂd DLC046 ǂf 1768 ǂg 18301001 Fourier, Jean Baptiste Joseph, ǂc baron, ǂd 1768-18304001 Fourier, Joseph, ǂc baron, ǂd 1768-1830667 THIS 1XX FIELD CANNOT BE USED UNDER RDA UNTIL THIS RECORD HAS BEEN REVIEWED AND/OR UPDATED670 His Die Auflösung der ... 1902670 His Joseph Fourier face aux objections contre sa théorie de la chaleur, 1980: ǂb t.p. (Joseph Fourier)670 Lavoisier, A.L. Elements of chemistry, 1985: ǂb t.p. (Jean-Baptiste-Joseph Fourier)