1st sentence - "happens to be or to have been" is synonymous to "it turned out".
2nd sentence - Using "didn't have a permanent residence" sounds more technical/formal than "had to move about".
3rd sentence - Using the word "seen" instead of "read" emphasizes that the book may be picture filled. Instead of "lived" I used the word reside to be consistent with the 2nd sentence that is using the word "residence".
4th and 5th sentence - The last two sentences may be written as one sentence. The use of "trees" in the original paragraph may also refer to parks.
Related topic - meaning of paraphrasing and an example: