Continuing this site's subtle transition into an all-Patty Duke fan blog, I offer a series of observations regarding the show (which now airs at 5:30 and 6:00 am on the This! channel.)
First off, I have often pondered the "country of origin" of the identical cousin (above). Her accent is a wildly-fluctuating generic European cross between Irish and French.
Am told (Wikipedia) she is supposed to be Scottish. This is unlikely; no one I know from Glasgow "adores a minuet" (they do adore bacon sarnies, getting pissed drunk, and staying on the dole however.)