I'm reading Jane Austen's novel of "Sense and Sensibility". There is coming a sentence as below:
The late owner of this estate was a single man, who lived to a very advanced age, and who for many years of his life, had a constant companion and housekeeper in his sister.
In which, the sentence, of "had a constant companion and housekeeper in his sister." I have two questions:
- What does the sentence "[he] had a constant companion and housekeeper in his sister" mean?
- What does the word "in" of "in his sister" mean?