| Who is it? | Relationship to you | Common Ancestors |
| sibling of your parent | aunt or uncle | your grandparents |
| first cousin of your parent | first cousin once removed | your great grandparents |
| second cousin of your parent | second cousin once removed | your great great grandparents |
| third cousin of your parent | third cousin once removed | your great great great grandparents |
| n-th cousin of your parent for n>3 | n-th cousin once removed | your n times great grandparents |
Note that we could speak of zeroth cousins instead of siblings. A sibling relationship is exactly the same kind of relationship as is a cousin relationship. It's just that siblings are one generation closer than are first cousins. Similarly, an aunt or an uncle is a zeroth cousin once removed.