A quick question about Solutions 1. Exer. 3.5

3.5
(E) A king is called Sigurðr. He owns a sword but not a horse. Óláfr is also
a king. He owns a horse. Sigurðr kills Óláfr and takes the horse.
(ON) Heitir konungr Sigurðr. Á hann brand en hest eigi. Óláfr heitir ok
konungr. Hest á hann. Sigurðr vegr Óláf ok tekr hestinn.
I would have translated this to Óláfr er ok konungr. and used 'to be'
instead of 'is called'.
Could you explain?
Thank you, I am enjoying the course.
Mark Mellblom