Sorry, I forgot about this thread! The second picture posted could very well be the father, but it is weird that he doesn't show any signs of being bibbed since that is necessary for the Ancona (broken pattern) color. It is a little perplexing, but that would explain where the black came from. The second bird looks like a Blue Pied (heterozygous Blue and heterozygous Runner pattern). There are a number of different crosses/colors that could create that, but again- the lack of bib and white primaries is kind of unusual considering the coloring of the bird in post 1.
Anyway, as far as getting more of the same (Black and White Ancona pattern), it is going to be hard, especially if you just use Runners. As I said, definitely do NOT breed to white. If you just like the color and don't mind not using Runners, I would breed back to Black Swedish or Black Magpie. If you want to stay with Runners, breed back to Pencilled or Emery Pencilled. If you can't locate either of those, then breed back to Black.
In all of these breedings though, you are likely only going to get a few birds that look similar to the one in the first post. The Ancona pattern is pretty easy to get, but it doesn't breed true (comparatively) and the patterns you need to produce it do not commonly exist in Runners. You need the combination of heterozygous extended black, Bibbed, and Runner pattern. It is only slightly different from the combination that creates Magpies.