Multigenerational family epics are difficult. One of the most powerful things a writer can do is create a protagonist the reader can invest in. Multigenerational stories spurn this wisdom for a different kind of magic, one that relies on the reader to follow the threads that connect the family members over years, decades, sometimes even centuries. If not done properly, the result can be messy or just uninteresting. Every once in a while, however, I…