Short answers, pulled from the story.
John Hall was an English physician who lived from 1575 to the 25th of November 1635 and became the son-in-law of William Shakespeare through his marriage to Shakespeare's daughter Susanna. He ran a medical practice in Stratford-upon-Avon, where he was the only doctor in town, despite never holding an English medical degree.
John Hall married Susanna Shakespeare, daughter of William Shakespeare, on the 5th of June 1607. The couple had one daughter, Elizabeth, and lived in a Stratford house now known as Hall's Croft.
In 1613, John Lane accused Susanna Hall of adultery with Ralph Smith, a 35-year-old haberdasher, and claimed she had caught a venereal disease from him. The Halls sued Lane for slander in the Consistory Court at Worcester on the 15th of July, and Lane was found guilty and excommunicated after failing to appear.
John Hall kept two notebooks of medical case notes, with the earliest entry dating from 1611 in Stratford. Surgeon James Cooke bought and translated the notebooks from Latin, publishing them in 1657 as Select observations on English bodies, or Cures both empericall and historicall performed upon very eminent persons in desperate diseases; only the first notebook survives.
Liam Cunningham played John Hall in the original stage production of Peter Whelan's play The Herbal Bed. Tom Hiddleston portrayed him in the 2005 BBC Four television film A Waste of Shame: The Mystery of Shakespeare and His Sonnets, and Hadley Fraser played him in Kenneth Branagh's 2018 film All Is True.
John Hall and Susanna lived at Hall's Croft, a house now open to the public. After William Shakespeare's death, the couple moved into New Place, Shakespeare's former home.