| Name | Relationship with Michael Brennan | Civil | Canon |
| Carroll, Theresa | 2nd great-granddaughter | IV | 4 |
| Carroll, Wilfred | Husband of the great-granddaughter | | |
| Chevalier, Ryan | Husband of the 3rd great-granddaughter | | |
| Chevalier, Sheena | 4th great-granddaughter | VI | 6 |
| Clark, Jean | Wife of the great-grandson | | |
| Coogan, Michael | Son-in-law | | |
| Cook, Margaret | 3rd great-granddaughter | V | 5 |
| Cook, Matthew | 3rd great-grandson | V | 5 |
| Cook, Rodney | Husband of the 2nd great-granddaughter | | |
| Cook, Timothy | 3rd great-grandson | V | 5 |
| Cooney, Barkley Joseph | 2nd great-grandson | IV | 4 |
| Cooney, Christine Claire | 2nd great-granddaughter | IV | 4 |
| Cooney, Claire Catherine | Great-granddaughter | III | 3 |
| Cooney, Colleen Claire | 3rd great-granddaughter | V | 5 |
| Cooney, Daniel Barkley | 3rd great-grandson | V | 5 |
| Cooney, Doreen Ann | 2nd great-granddaughter | IV | 4 |
| Cooney, Doris Julia | Great-granddaughter | III | 3 |
| Cooney, Eileen Mary | Great-granddaughter | III | 3 |
| Cooney, Gregory Howard | 3rd great-grandson | V | 5 |
| Cooney, Howard Joseph | Great-grandson | III | 3 |
| Cooney, James Mathew | 2nd great-grandson | IV | 4 |
| Cooney, John | Husband of the 3rd great-granddaughter | | |
| Cooney, Joseph Bartholemew | Husband of the granddaughter | | |
| Husband of the great-granddaughter | | |
| Cooney, Keith | 3rd great-grandson | V | 5 |
| Cooney, Kelley Christine | 3rd great-granddaughter | V | 5 |
| Cooney, Kevin John | 3rd great-grandson | V | 5 |
| Cooney, Laura Lee | 3rd great-granddaughter | V | 5 |
| Cooney, Leo Joseph | 2nd great-grandson | IV | 4 |
| Cooney, Matthew Howard | 3rd great-grandson | V | 5 |
| Cooney, Richard Joseph | 2nd great-grandson | IV | 4 |
| Cooney, Robert James | 3rd great-grandson | V | 5 |
| Cooney, Ronald Joseph | 2nd great-grandson | IV | 4 |
| Cooney, Todd Joseph | 3rd great-grandson | V | 5 |
| Cornforth, Andrew Thomas | 4th great-grandson | VI | 6 |
| Cornforth, Ann | 2nd great-granddaughter | IV | 4 |
| Cornforth, Brian Thomas | 2nd great-grandson | IV | 4 |
| Cornforth, Catherine Ann | 2nd great-granddaughter | IV | 4 |
| Cornforth, Cheryl Elizabeth | 3rd great-granddaughter | V | 5 |
| Cornforth, Christine Alison | 3rd great-granddaughter | V | 5 |
| Cornforth, Donald Patrick | 2nd great-grandson | IV | 4 |
| Cornforth, Jasmine Marie | 4th great-granddaughter | VI | 6 |
| Cornforth, Joseph Kenneth | 2nd great-grandson | IV | 4 |
| Cornforth, Keith Austin | 2nd great-grandson | IV | 4 |
| Cornforth, Kelli Maria | 3rd great-granddaughter | V | 5 |
| Cornforth, Mary Ellen Violet | Wife of the great-grandson | | |
| Cornforth, Mary Theresa | 2nd great-granddaughter | IV | 4 |
| Cornforth, Melissa | 4th great-granddaughter | VI | 6 |
| Cornforth, Percy Thomas | Husband of the great-granddaughter | | |
| Cornforth, Robert Jeffery | 3rd great-grandson | V | 5 |