A princess came to town last Wednesday. She was dressed in sensible black heels, thick pantyhose and a silken neck scarf. Eighty-eight-year-old Elettra Marconi Giovanelli, her hair a soft nest of fading blonde curls, was visiting West Marin to bear witness to her father’s electric legacy.
The princess is not the daughter of a king. She is royalty by marriage, having wed Prince Carlo Giovannelli in 1966. But her father, the legendary Italian inventor Guglielmo…