Your Penny hens are lovely. My question now is what Enya could be mixed with, as she has yellow legs rather than slate (I may be wrong, but that's how they appear in the photoI am very happy to help. Partridge Penedesencas are very rare so it is understandable that they were hard to figure out. The leg color, shape, egg color, eye color and the comb will help with figuring this out. Yours does not have a good example of it, but look at the back to the comb--you will see a couple of sprigs there and that is the start of the kings comb that penedesencas have.
You can see better examples on my hens.
-Alex