Bidén, Sortin and Prunell are not Swedish surnames, but judging from their structure one could imagine that they were. They closely match the pattern of three common Swedish surname types, represented by names such as Lundén, Lundin and Lundell. Surnames of this kind are not among the most common in Sweden, but the endings in question occur in a large number of different names. As the opening examples perhaps show, to many Swedish speakers words containing them are strongly suggestive of surnames. This article explores Swedish surnames ending in -én, -in and -ell, above all to see whether there are any differences in their geographical distribution in modern-day Sweden. Each ending is studied individually, for each of the 21 counties in the country, and the geographical distribution of some of the individual names is also touched on.