Daisy Ashford 
The Young Visiters or, Mr. Salteena’s Plan (Illustrated) [EPUB ebook] 

The Young Visiters or Mister Salteena’s Plan is a 1919 novel by English writer Daisy Ashford.Alfred Salteena, an ‘elderly man of 42’, has invited 17-year-old Ethel Monticue to stay with him. They receive an invitation to visit Alfred’s friend, Bernard Clark, which they readily accept. Bernard is ‘inclined to be rich’ and shortly after their arrival, Ethel and Bernard are already attracted to each other.
Alfred seeks Bernard’s advice on how to become a gentleman. Bernard is doubtful that this can be managed, but writes an introduction to his friend, the Earl of Clincham. Alfred excitedly rushes off to London to visit the Earl…