She was assigned to Haakon Palson of Orkney, but he had no recorded daughter Hvarflad *or* Gormlaith (which is an exclusively Irish name) by wife *or* mistress.
Haakon and unknown wife had one son, Paul "the silent", deposed 1137, no descendants on record.
Haakon's mistress, Helga Moddansdottir (nic Moddan), had a sister Frakokk who was reputed to be a witch. The two of them allegedly poisoned a shirt intended for Paul the Silent, but Helga's own son Harald "Smooth-tongue" (the Orator) became jealous of the fine workmanship and tried it on first. Oops....
The anecdote on Orkneyinga Saga makes more sense once one realizes that the women were trying to get rid of the legitimate son so they could put their own candidate in his place.
Anyway - Harald had two reported sisters: Ingibjorg, who married Olaf Tit-Bit (or Morsel) of the Hebrides and had by him a son Godrod and (possibly) a daughter Ragnhild; and Margaret, who married 1) Madach of Atholl and 2) Erlend the Young, whoever that was.
About Olaf: 48. OLAF THE TITBIT was king of the Isle of Man from 1112-1143. His Norse epithet bitlingr, meaning something like “titbit” or “morsel,” was predictably a reference to his height. http://mentalfloss.com/article/58623/60-historys-strangest-royal-ep...
Olaf Shortstuff can be confidently equated with Olafr Godredsson, King of Man and the Isles c.1112/1113 – 1153.
He had at least two wives: Ingibjörg, daughter of Hákon Pálsson, Earl of Orkney; and Affraic, daughter of Fergus, Lord of Galloway. His marriage to the latter appears to have taken place in about the 1130s; not long afterwards, one of Óláfr's daughters (Ragnhild, whose mother was probably Ingibjorg) married Somairle mac Gilla Brigte, Lord of Argyll.
https://en.wikipedia.org/wiki/Olafr_Godredsson