A 61-year-old Maryland grandmother and school administrator has been named ABC’s first-ever “Golden Bachelorette.”Joan Vassos, who ABC says is from Rockland — but most likely is from Rockville, according to Washingtonian magazine — will lead the network reality TV spin-off of its enormously popular “Bachelorette” series.“The Golden Bachelorette” focuses on women of a certain age…
