Mercy: Mercy Rose (Bishop) Hamilton, born on 08/02/49 in Florida. She moved to the Boston area after meeting Nathaniel Joseph Hamilton and he finished with his military service. She started out as a defense attorney in a fairly large firm, but left because the partners were a bunch of "jackasses." She started her own firm and would take cases pro-bono to help "the little guy" beat "big old bullies." This tenacity and stubborn streak would aid her well when she woke-up in Vault 111 after Nate was killed and Shaun taken. Despite being a tiny burning torch of rage and grief, she's dedicated herself to finding a way to track down her husband's killers while also forging a home in the Commonwealth and she's not going to let anybody stand in her way to track down her son (pro-tip, she's Highly Disappointed in who and what Shaun became). She eventually falls in love with MacCready, Deacon, and Jake Evans - cobbling together an unorthodox relationship that somehow works - even if Mac never stops bossing people, Jake leaves tools everywhere, and Deacon has the gravitas of a 2 year old.
Sparrow "Emma" Williams: Born 01/03/2269, is 19 when you first meet her. She was born somewhere in Massachusetts, but not in the Boston Commonwealth area. Her parents were farmers on a decently prosperous farm and she was the oldest of three children. When she was 11, slavers attacked the farm. They killed her father, tortured her mother, and ripped her younger brother and sister out of her hands. She got away, but not before she was shot. A neighboring farm took her in as little more than slave labor. She stayed until well enough to travel, moving from farm to farm as she grew older, till she heard of Diamond City. The Great Green Jewel sounded like the best place for an illiterate 14 year old who needed work, so she managed to make her way there. Unfortunately, at 16, the Institute paranoia began to run over into Piper's writings, and Emma - who is so pale she's almost an albino, around 4'9" tall, malnourished, and barely talks - caught the eye of the locals. Convinced she was an Institute plant, they drove her from the city, several men holding her down and branding her so she couldn't Hide The Truth. She fled into the Commonwealth and hid, making do with scavving and living off of what she could steal. When Mercy started setting up settlements, transplants from Diamond City saw her and spread the word that she was Institute. A bounty (that hit 600 caps) for her dead or alive was issued - and Mercy didn't know about it. Fortunately for Emma, she ran into a helping hand - Canary aka Grace Williams. Canary and her partner, Birdie, adopted Emma - who renamed herself Sparrow. She now does work for the Railroad and Mercy. She's dating a synth named Bean and a member of the Railroad, Darcy (Coyote).
Francesca "Frankie" Warren is 23 (I haven't gotten her birthdate down yet) and is part of the local band, Cora and the Wailers. The band plays in Annie's Tavern in Jamaica Plains and is one of the biggest draws to the burgeoning town. She grew up near the Dallas/Ft. Worth Crater in Texas, the only child to the High Priest and his Wife of a Fundamentalist Christian Children of Atom cult. The cult believes that Atom is the return of Jesus and true believers will allow themselves to show their belief through division. Frankie was raised to become the wife of her father's second-in-command's oldest - who was only 14 years older than her (blech). When she turned 14, she stole money from the church lockbox and hightailed it West to California where she became a stripper, taught herself to play more than just the banjo and clarinet (she also plays the guitar and trumpet) and joined Cora's band. The band started heading East, hit the Commonwealth, heard about Jamaica Plains - and well, settled in (in the SWAMP as Frankie likes to moan). She's a fiesty 4'10" of blonde hair and big brown eyes that will beat you with a big old stick. She met a "hot" ghoul (she's the first to admit that Beau is one gnarly looking dude - but that man is FIRE) and fell in love...hard. Her and Beau will be heading back West to Texas to rescue her baby sister...that she just found out about when her Daddy showed up to abduct her and drag her back to Texas. Let's just say that Beau's sweet and a gentleman - till you hurt Frankie...and then some of who he used to be comes out to play.