Ingjaldr Helgason[1] was a Hiberno-Norse chieftain of the 9th Century.
According to Eyrbyggja saga, Ingjald's mother was Thora, a daughter of Sigurd Snake-in-the-Eye, who was a son of Ragnar Lodbrok.
However, this connection is dubious, as Ingjald appears to have been born in the early 9th Century – either before or at around the same time as Ragnar.
Ingjald had at least one son, Olaf the White, who became King of Dublin.
Forte, Angelo, Richard Oram and Frederik Pedersen.