SSDI database in http://ssdi.rootsweb.ancestry.com/cgi-bin/ssdi.cgihttp://ssdi.rootsweb.ancestry.com/cgi-bin/ssdi.cgi shows an Alexander Kotarski, born on Dec 28, 1905 and died on March 1982. Last residence was Peabody, Essex, MA. No Theresa or Teresa was found, but I did not try similar spellings.
Also, in http://obits.rootsweb.ancestry.com/cgi-bin/obit.cgihttp://obits.rootsweb.ancestry.com/cgi-bin/obit.cgi there is an obituary for KOTARSKI, Alexander John II "George"; 57; Peabody MA>Naples ME; Salem E-N (MA); 2002-10-8; matms. Maybe it is the George you mentioned, specially because of that "Alexander, the second". I don't know what "matms" stands for, but I assume it is the name of the newspapers the death notice was published.
Another venue to be tried is http://www.raogk.org/massachu.htmhttp://www.raogk.org/massachu.htm There is half a dozen of volunteers willing to help in the Essex area, including lookups in newspapers.