Sumarvinsson
nafnorð karlkyn Föðurnafn
Fallbeygingar
Eintala
nefnifall
Sumarvinsson
þolfall
Sumarvinsson
þágufall
Sumarvinssyni
eignarfall
Sumarvinssonar
Fleirtala
nefnifall
Sumarvinssynir
þolfall
Sumarvinssyni
þágufall
Sumarvinssonum
eignarfall
Sumarvinssona