Question: In what county is Lynda Blutreich's birthplace the largest city?

Context paragraphs:
History of Savannah, Georgia: The city of Savannah, Georgia, the largest city and the county seat of Chatham County, Georgia, was established in 1733 and was the first colonial and state capital of Georgia.  It is known as America's first planned city and attracts millions of visitors, who enjoy the city's architecture and historic structures such as the birthplace of Juliette Gordon Low (founder of the Girl Scouts of the United States of America), the Telfair Academy of Arts and Sciences (one of the South's first public museums), the First African Baptist Church (one of the oldest black Baptist congregations in the United States), Temple Mickve Israel (the third-oldest synagogue in America), and the Central of Georgia Railway roundhouse complex (the oldest standing antebellum rail facility in America).  Today, Savannah's downtown area is one of the largest National Historic Landmark Districts in the United States (designated in 1966).

List of people from Augusta, Georgia: The city of Augusta, Georgia, the largest city and the county seat of Richmond County, Georgia, is the birthplace and home of several notable individuals.  This is a list of people from Augusta, Georgia and includes people who were born or lived in Augusta for a nontrivial amount of time.  Individuals included in this listing are people presumed to be notable because they have received significant coverage in reliable sources that are independent of the subject.

List of people from Savannah, Georgia: The city of Savannah, Georgia, the largest city and the county seat of Chatham County, Georgia, is the birthplace and home of several notable individuals.  This is a list of people from Savannah, Georgia and includes people that were born or lived in Savannah, Georgia for a nontrivial amount of time.  Individuals included in this listing are people presumed to be notable because they have received significant coverage in reliable sources that are independent of the subject.

Lynda Blutreich: Lynda Blutreich (née Lipson; born December 13, 1971 in Lynn, Massachusetts) is a three time USATF champion javelin thrower from the United States.

Great Falls, Montana: Great Falls is a city in and the county seat of Cascade County, Montana, United States.  The 2015 census estimate put the population at 59,638.  The population was 58,505 at the 2010 census.  It is the principal city of the Great Falls, Montana Metropolitan Statistical Area, which encompasses all of Cascade County and has a population of 82,278.  Great Falls was the largest city in Montana from 1950 to 1970, when Billings surpassed it.  Great Falls remained the second largest city in Montana until 2000, when it was passed by Missoula.  Since then Great Falls has been the third largest city in the state.

List of people from Toledo, Ohio: The city of Toledo, Ohio, the largest city and the county seat of Lucas County, Ohio, is the birthplace and home of several notable individuals.  This is a list of people from Toledo, Ohio and includes people that were born or lived in Toledo, Ohio and the surrounding area.  Individuals included in this listing are people presumed to be notable because they have received significant coverage in reliable sources that are independent of the subject.

Oakland, California: Oakland is the largest city and the county seat of Alameda County, California, United States.  A major West Coast port city, Oakland is the largest city in the East Bay region of the San Francisco Bay Area, the third largest city overall in the San Francisco Bay Area, the eighth largest city in California, and the 45th largest city in the United States, with a population of 419,267 as of 2015 .  It serves as a trade center for the San Francisco Bay Area; its Port of Oakland is the busiest port in the San Francisco Bay, the entirety of Northern California, and the fifth busiest in the United States of America.  The city was incorporated in 1852.

Lynn, Massachusetts: Lynn is the 9th largest municipality in Massachusetts and the largest city in Essex County.  Situated on the Atlantic Ocean, approximately 10 mi north of downtown Boston, Lynn is part of Greater Boston's urban inner core.  An early colonial settlement and industrial center, Lynn was long colloquially referred to as the "City of Sin," owing to its historic reputation for crime and vice.  Today, however, the city is known for its large international population, historic architecture, downtown cultural district, loft-style apartments, and public parks and open spaces, which include the oceanfront Lynn Shore Reservation; the 2,200-acre, Frederick Law Olmsted-designed Lynn Woods Reservation; and the High Rock Tower Reservation.  The city also is home to the southernmost portion of the Essex Coastal Scenic Byway, Lynn Heritage State Park, and the National Register-listed Diamond Historic District.

Columbus, Indiana: Columbus is a city in and the county seat of Bartholomew County, Indiana, United States.  The population was 44,061 at the 2010 census.  In its built environment, the relatively small city has provided a unique place for noted Modern architecture.  Located about 40 miles (64 km) south of Indianapolis, on the east fork of the White River, it is the state's 20th largest city.  It is also the principal city of the Columbus, Indiana metropolitan statistical area, which encompasses all of Bartholomew County.  Columbus is the birthplace of former Indiana Governor and current Vice President of the United States, Mike Pence.

Rome, Georgia: Rome is the largest city in and the county seat of Floyd County, Georgia, United States.  Located in the foothills of the Appalachian Mountains, it is the principal city of the Rome, Georgia, Metropolitan Statistical Area, which encompasses all of Floyd County.  At the 2010 census, the city had a population of 36,303.  It is the largest city in Northwest Georgia and the 19th largest city in the state.

Supporting paragraphs: Lynda Blutreich Lynn, Massachusetts
Answer: Essex County