We have ended up keeping the black cat. He is adjusting well. Very calm. Our other male is still not pleased, but they are getting better. The other day I had them both approximately in my lap being petted at the same time. Things like that will help. He tolerates the four-year-old version of petting quite well. Even seeming to enjoy it, despite the occasional roughness. Mr. N is calling the cat 'Shadow,' so I suppose that will be his name.
In the mean time, a family member has had to get rid of her two kittens. We agreed to take the two kittens and find them homes but... They've stayed. One is a Himalayan Persian, which the Bratling promptly decided she must have. The other is a sweet, sleek little cuddler, who also has energy to play like nothing I've ever seen.
Bratling's former kitty wasn't too happy about sharing a home with other animals, and had taken to hiding all the time. My mother took her in, and they are getting along wonderfully.
This means we have five cats, a dog, several rats, three adults, and one child all living in a two bedroom house. Eek! Still, we like all the cats too much to decide to re-home even one. Hubby says that if it starts to annoy him, we'll consider it, but until then we can keep them.
Having so many cats has definitely added a sense of urgency to my desire for building cat shelves. Vertical space is a good thing!