Seisyll
From the Latin family name Sextilius, built on sextus, "sixth".
Meaning and origin
Seisyll is the Old Welsh adaptation of the Latin name Sextilius, one of a number of Latin names that stayed in use among the British Celtic aristocracy long after Roman administration in Britain had ended.
How to pronounce Seisyll
| Welsh (United Kingdom) | SAY-suhlh /ˈsəi̯sɨɬ/ |
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About this entry
Drafted with the help of an AI model, then checked by a person. Last checked on 16 September 2026.
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