While Brianna knows who William is, William does not yet know that Jamie is his father and that Brianna is his sister. He doesn't discover the connection until late in book seven, when he finds himself in Jamie's company and finally sees the resemblance between them.
Brianna learns the truth about William Ransom in Outlander Book 6, Chapter 116. While we have known the truth for a long time, we see Bree learn that William is her brother in Outlander Book 6, Chapter 116.
William was born 12 years after the Battle of Culloden. (Remember, Jamie spent 7 years living in a cave and about 4 years in prison before arriving at Helwater and meeting Geneva.) So really, Brianna is about 12 years older than William.
The character of William, Jamie's biological son who is unaware of his parentage, made his series debut in Season 3.
Murtagh is often mistaken for Jamie's father, but he is actually his kindly godfather. He is not married and hasn't fathered any children.
There are no biological children after Brianna in Outlander
Claire and Jamie don't have any more children after Brianna. Claire heads through the stones while pregnant with Brianna at the end of the second season/book. She spends 20 years in the 20th century, and she and Frank don't have any children together.
William loses both his mother Geneva, who dies during childbirth, and his supposed father the Earl (killed by Jamie), shortly after his birth, from there he ends up in the care of Jamie's friend and close confidant Lord John Gray - who had married Geneva's sister Isobel.
In early 1779, pregnant Marsali, Fergus and their daughters Joan and Félicité settle in Wilmington. Their eldest son, Germain, returns to Fraser's Ridge with his grandparents, Jamie and Claire, as Fergus and Marsali think that it is dangerous for a boy Germain's age to live in a large city in time of war.
Claire Fraser was born on October 20, 1918.
That would make her 27-and-a-half at the time she and Jamie meet in the books, while Jamie's barely 22. This would make Claire five and a half years older than Jamie.
At its heart, Outlander is just a really long romance story, and all romances need a happy ending. Insofar as wombs are original homes, this installment in the series ends with Jamie and Claire coming home to each other.
Bree and Roger do eventually go back to their own time in the Outlander novels after Brianna gives birth to their daughter Mandy. Mandy has a heart condition that Claire can't treat in the 1770s, so the MacKenzies head back to the 1970s at the end of A Breath of Snow and Ashes to attempt to save their daughter.
However, she came back a few hours later with another answer thanks to her “Noble Nitpickers.” It turns out that the ninth novel will be set in June 1779 at first, which makes Jamie and Claire 58 and 62 respectively.
Yellowstone season 4 revealed that Jamie and Cristina has a son. The yet-unnamed baby boy is now the second 7th-generation Dutton in the show. In Yellowstone season 5, Jamie Dutton has a secret weapon that could give him the upper hand against both John and Beth: Jamie and Cristina's baby son.
Since the age of six, William has been raised by Lord John Grey, his legal guardian and husband of Geneva's younger sister, Isobel Dunsany.
Following the Battle of Culloden, Fergus continues to live at Lallybroch, and Jenny Murray tutors him with the rest of her children. He sometimes brings food to Jamie, who lives in a cave near the estate.
For now, though, it appears both Fergus and Marsali aren't time travellers with actors Lyle and Domboy addressing this in an Instagram live Q&A from earlier this year.
Henri-Christian is born as the fourth child of Fergus and Marsali. He is a dwarf and some of the residents of Fraser's Ridge believe he is a punishment for his parents' sins.
Well, Fergus is believed to be the son of the comte and Amelie Beauchamp.
Grey falls in love with Jamie, who rejects his advances. Still, Grey cannot dismiss his feelings.
The killer is in fact Malva's brother, Allan Christie (Alexander Vlahos). He is also the father of her baby, having raped and abused Malva since she was a child. Malva had decided to tell the truth, which is why Allan killed her.
Mary Hawkins' baby was that of Alex Randall, with her and Jack only marrying to ensure Mary was provided for after Alex's death. But that didn't make Mary and Black Jack Randall's wedding valid. If you remember back to “The Wedding,” Jamie made it clear that he and Claire had to consummate the relationship.
Just as she begins to worry that Jamie might be capable of lying to her, Jamie quells her fear by revealing to her his indiscretion with Mary MacNab, a woman who worked at Lallybroch, while Claire was back in 1968 with Frank and Brianna. This confession soothes Claire, and the two find themselves realigned once again.
For instance, Lord John Grey learns the truth about Claire, Brianna, and Roger... though he has a hard time believing it. And speaking of Roger and Brianna, they get into their own time-travel trouble — Roger with his ancestor Buck and Brianna with Rob Cameron.
Not long after they arrive, Dougal gets word that his wife Maura has passed away of a fever at their estate of Beannachd. Dougal has an affair with Geillis Duncan which results in a pregnancy.