Mama Kitty and her one remaining baby have moved in and I think they are here to stay. Mama is very young, not yet a year old and coal black. She's got some Siamese in her, what with her triangular face, long slinky tail and her vocal cords. Skinny little thing but we're working on that. Baby is smoky gray, like her Dad who has some Russian Blue blood.
Mama is not totally feral, she's adapted happily to being in the house and has no interest in going out. Her purr rivals a buzz saw. She's also very easy going when it comes to the other cats. Baby is happy to be anywhere Mama is. Her current favorite toy is the automatic litter box.
The other cats are pretty much ignoring them. Gabriel, the elder statesman has seen many cats come and go in his time and Leia knows she's the Princess so they aren't concerned. Ollie keeps to himself as always. Just as we suspected, Corky is the one who wants them gone. She's very protective of her "territory" and doesn't care for interlopers.
Mama has a sister who just had a litter too - so I wonder if the cat population is about to take another jump.