Medlands calls Reginald I "Renaud de Mâcon...comte de Bourgogne".
Being "de Mâcon" would be useful to add either in the profile name OR in alternate names so it comes up if someone enters "Renaud de Mâcon" trying to find this profile page.
Possibly "de Mâcon" might represent his town of birth?... though seldom do medieval sources provide precise towns of birth.
http://fmg.ac/Projects/MedLands/BURGUNDY%20Kingdom.htm#RenaudIComte...