No I am not confused (well not as much as you might think) but this one did give me a few headaches at first.
It's a bit complicated to go into here but I believe Margaret was previously married to a Gell (I am willing to be corrected on this). At the same time though there was another Henry who was married to a Margaret Gell.
Add to this that Margaret Crebbin's stepfather was possibly another Henry Gawne of Cregneash and you can see that it all gets a bit messy. I am not sure now if I have resolved it completely.
I look forward to hearing from you