I've got a niece whose name is
Michaela; she's always been known as
Kayla, pronounced with the
Kay to rhyme with
May, not with Why.
And then I taught a
Michaela who was likewise known as
Kayla, but she pronounced it with the
Kay rhyming with Why.
So there is also that possibility.
As for Linneth, I knew one of those, too. Her parents couldn't agree on a name, so in her case it was a merger between
Gwyneth and, I think,
Lindsey (or possibly
Linda).