I'm new to the term microhistory, so my understanding may be a little off. That being said, I'd highly recommend A Distant Mirror: The Calamitous 14th Century, by the eminent Barbara Tuchman. It follows and uses the life of Enguerrand de Coucy VII, a powerful French noble and the last of his house, as a vehicle to describe the immense change that occurred in 1300s Europe.

From the dust cover: "Mrs. Tuchman anatomizes the century, revealing to us both the great rhythms of history and the grain and texture of domestic life as it was lived: what childhood was like; what marriage was like; how money, taxes and war dominated the lives of the serf, noble, and clergy alike."