Just started The Thirteenth Child (The Frontier Magic series, Book 1, by Patricia Wrede, via Overdrive on my Nook). An alt-history America has magic, mammoths, and dragons... out on the untamed frontier. The MC, Eff, is an ill-omened 13th child, twin sister to a seventh son of a seventh son. I'm early in: the family's just moved from the civilized regions of the East to a frontier town, so the father can teach at a university... and, not incidentally, so Eff can escape the merciless persecution of her extended family and the township who all knew she would be "evil" because of her birth status. (Her parents, thankfully, are on her side.) So far, it's intriguing, though I've had mixed luck with Wrede in the past. (Loved her Enchanted Forest Chronicles, but didn't care for her Mairelon the Magician.)
Need to get back to Vernor Vinge's book, too, to give it a proper chance, but I keep forgetting to...