Department of slightly unusual acquisitions

ALS from the evangelical novelist Emily Sarah Holt to Mrs. Mackenzie, December 18, 1877. 

"My sister" is actually her sister-in-law, Anna; the brother in question is James Maden Holt, MP (PDF).  Holt, who would have been forty-one when this letter was written, appears to have lived with them her entire life.  11 Southwell Gardens was part of a new housing development that began in the 1870s.   

As you can see, ESH had excellent handwriting, which (blessedly) also characterizes her private MSS.