Mansion

Mark Twain's residence from the Fall of 1905 to 1908, when the Stormfield house was completed.  This is where Paine began his biography of Twain.  During this period, in the summer of 1906, he stayed at Upton Farm near Dublin, in New Hampshire.

See Then & Now: A Home Fit for Fifth Avenue (and Mark Twain)

The Clemenses residence from October 5, 1896 to July 8, 1897

1. 23 Tedworth Square, Chelsea, London SW3

Pearmain’s house

The Dollis Hill Estate was formed in the early 19th century, when the Finch family bought up a number of farms in the area to form a single estate. Dollis Hill House itself was built in the 1820s. It was later occupied by Lord Aberdeen who often had Prime Minister William Ewart Gladstone to stay as a guest. 

n the early 1800s, the area was dominated by the Imlay farm, which occupied most of the land from present-day Imlay Street west to the north branch of the Park River, and from Farmington Avenue south to the Park River. John Hooker and his brother-in-law Francis Gillette purchased the pasture and woodland from William Imlay in 1853 for the purpose of developing the real

Twain's summer home...Quarry Farm is located in Elmira, New York. In 1869, Jervis Langdon purchased it as a vacation home for his family. When he died the following year, it was inherited by his eldest daughter, Susan Langdon Crane, Mark Twain's sister-in-law. Twain and his family summered there for more than twenty years. He wrote much of his work in an octagonal study built expressly for him, apart from the main house, in 1874. The study has since been moved to the Elmira College Old Campus in order to protect it from vandalism.

Clemens's family lived here from October 1901 through 1903.  The summer of 1902 was spent at York Harbor, Maine.

Stormfield was the mansion built in Redding, Connecticut for author Samuel Clemens, best known as Mark Twain, who lived there from 1908 until his death in 1910. He derived the property's name from the short story "Captain Stormfield's Visit to Heaven". The building was destroyed in a 1923 fire, with a smaller replica built at the same site the following year.

Wikipedia