270 BC - 
| Serfyn ap Ceidio Siluria 155 BC- |
| Serfyn ap Ceidio Siluria | |
| B: | 155 BC |
| Wales | |
| D: | Wales |
 | Gwyn ap Caid Ancient Rome, Italy-Ancient Rome, Italy |
| Gwyn ap Caid | |
| B: | Ancient Rome, Italy |
| D: | Ancient Rome, Italy |
| Ceidio ap Arthen Siluria 187 BC- |
| Ceidio ap Arthen Siluria | |
| B: | 187 BC |
| Wales | |
| D: | England |
| Arthen ap Merion Siluria 230 BC- |
| Arthen ap Merion Siluria | |
| B: | 230 BC |
| Wales | |
| D: | Wales |
|
| Merion ap Ceraint Siluria 270 BC- |
| Merion ap Ceraint Siluria | |
| B: | 270 BC |
| Wales | |
| D: | Wales |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
