Man pages matching name xkbfreegeomkeyaliases in section 3:

XkbFreeGeomKeyAliases.3.en	debian 10 / libx11-doc
XkbFreeGeomKeyAliases.3.en	debian 11 / libx11-doc
XkbFreeGeomKeyAliases.3.en	debian 12 / libx11-doc