Editing Yrsa (section)

===''Gróttasöngr''===
[[Image:Fenja och Menja vid kvarnen Grotte (xylograph).JPG|thumb|right|Fenja and Menja at the mill]]The ''[[Gróttasöngr]]'' contains a stanza (nr 22) sung by the giantesses [[Fenja]] and [[Menja]]. It only names Yrsa and the situation that her son and brother (i.e. [[Hroðulf]]) will avenge Fródi ([[Froda]]):
{|
|
:Mölum enn framar.
:Mun Yrsu sonr,
:niðr Halfdanar,
:hefna Fróða;
:sá mun hennar
:heitinn verða
:burr ok bróðir,
:vitum báðar þat.
|
:Let us grind on!
:Yrsa's son,
:Hálfdan's kinsman,
:will avenge Fródi:
:he will of her
:be called
:son and brother:
:we both know that.([https://web.archive.org/web/20071121221718/http://www.northvegr.org/lore/poetic2/042.php Thorpe's translation])
|}

This piece cannot refer to ''Hrólfr Kraki's saga'' where Froda was the half-brother of Healfdene because this Froda was killed by Hroðgar. It can, however, be interpreted through the ''Skjöldunga saga'' in which Hroðulf's uncle Hroðgar was murdered by his half-brother Froda.