What's wrong with Ivar's baby on Vikings?

Ivar the Boneless' baby son Baldur was born with deformities — but while not many details were revealed, we could find out more as he confronts Freydis in the next episode.

What was wrong with Ivar the Boneless's son that he killed? In the movie it is not mentioned. - Quora

Vikings' Season 2 Spoilers: What's Wrong With Ragnar's Son? Episode 8 Reveals Aslaug's Prophecy Come True In 'Boneless' [RECAP]

Ivar/Spoilers, Vikings Wiki

Saddest death in Vikings behind ragnar😔, scp:@swales #vikings #ivar, vikings

Viking Ragnar's youngest sons which is also the famous bjorn ironside's half brothers, protrayed…

Saga of Ivar (The Boneless) Ragnarsson

Vikings season 6 ep 9: Ivar and Hvitserk reunite to take down Bjorn

Vikings - Young Ivar kills Boy (4x5) [Full HD]

Vikings': Alex Andersen Cast As Regular Ivar In Time Jump – Deadline

Baldur Ivarsson, Vikings Wiki

What was wrong with Ivar the Boneless's son that he killed? In the movie it is not mentioned. - Quora