| Index By Sept |
| Surname | | Clan | | Index |
| CLUNY | | MAC PHERSON | | |
| CLURKAN | | CHATTAN | | |
| CLURKEN | | CHATTAN | | |
| CLURKIN | | CHATTAN | | |
| CLURKON | | CHATTAN | | |
| CLURKUN | | CHATTAN | | |
| CLYNE | | SINCLAIR | | |
| COATE | | FARQUHARSON | | |
| COATES | | FARQUHARSON | | |
| COATES (b) | | MAC KINTOSH / FARQUHARSON | | |
| COATS | | FARQUHARSON | | |
| COATS (b) | | MAC KINTOSH / FARQUHARSON | | |
| COATSE | | FARQUHARSON | | |
| COBB | | KIRKPATRICK | | |
| COBB (var) | | LINDSAY | | |
| COCHARAN | | COCHRANE | | |
| COCHERAN | | COCHRANE | | |
| COCHRAN | | CIAN | | |
| COCHRAN | | DONALD | | |
| COCHRANE | | CIAN | | |
| COCHRANE (var) | | COCHRANE | | |
| COCK | | MAC DUFF | | |
| COCKRAM | | COCHRANE | | |
| COCKRAN | | COCHRANE | | |
| COCKRUM | | COCHRANE | | |
| COGGSWELL | | KIRKPATRICK | | |
| COGHILL | | SINCLAIR | | |
| COGHRANE | | CIAN | | |
| COHRAN | | COCHRANE | | |
| COLEMAN | | BUCHANAN | | (var) |
| COLIN | | CIAN | | |
| COLLEDGE | | ROXBURGH DIST / SCOTT | | |
| COLLIER | | DONNACHAIDH | | |
| COLLIER | | KIRKPATRICK | | |
| COLLIER | | MAC DUFF | | |
| COLLINGWOOD | | HALL | | |
| COLMAN | | BUCHANAN | | (var) |
| COLMETOSHE | | CHATTAN | | |
| COLQUHOUN | | CIAN | | |
| COLQUHOUN | | COLQUHOUN | | |
| COLSON | | DONALD | | |
| COLVILL | | ROXBURGH DIST / SCOTT | | |
| COLVILLE | | ROXBURGH DIST / SCOTT | | |
| COLVIN | | ROXBURGH DIST / SCOTT | | |
| COLYEAR | | DONNACHAIDH | | |
| COLYEAR | | MAC DUFF | | |
| COMAC | | CHATTAN | | |
| COMAS | | CHATTAN | | |
| COMBE | | MACTHOMAS / CHATTAN | | |
| COMBE | | MAC KINTOSH | | |
| COMBE (b) | | MAC KINTOSH / MAC THOMAS | | |
| COMBICH (var) | | STEWART OF APPIN | | |
| | Sunday, September 30, 2020 | | | | Page 20 |