Cognomen Sumarliðason (Sumarliðason 
) , across the world, is an extremely rare family name. The family name Sumarliðason is habitual in Northern Europe, particularly Iceland, where it is quite a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sumarliðason | Iceland |
| vetrliði sumarliðason Icelandic poet, IS (b. 930) |
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| eiríkur sumarliðason |
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