I've removed the MacHeth, and the 'of Ross' from her name fields, but haven't finalized what she should be shown as on Geni. Will gratefully leave that and any clean ups to you Anne Brannen :-)
Orkneyinga Saga refers to her as "Hvarflod".
The unquestionably-named-Gormflaith sometime wife of Brian Boru was called "Kormlod" in Njal's Saga.
Donnchadh O Corrain (of the CELT project and co-author of the well-researched "Irish Names") thinks Haraldr's wife may have been named "Forbhflaith" ("Perfect Princess") - it's a bit easier to see how one gets from that tongue-twister to "Hvafleva".