[1] Having emigrated from Northern Ireland, she was the first openly LGBTQ woman elected to Boston City Council.

[4] Breadon later attended the defunct Teleosis Homeopathic School in Newton, Massachusetts to study Homeopathy.

[6] After coming in second in a seven-way primary to fill the District 9 seat of retiring incumbent Mark Ciommo,[7] Breadon won the 2019 general municipal election with 58.5% of the vote.

[8] She sponsored the original "Unity Map" that arose from the redistricting process and passed the city council despite opposition from four white politically moderate Irish American members of the City Council, including Council President Ed Flynn, whose district was one of two that were at the center of the controversy surrounding the map.The map's controversy surrounded changes district 6 and district 7's boundaries.

[9][10] However, the map was ultimately prohibited by preliminary injunction from being used in the 2023 Boston City Council election after a ruling by Federal Judge Patti Saris.