Conversation so far:
When did Mihail Sadoveanu begin literary?
In 1896, at age sixteen, Mihail Sadoveanu gave thought to writing a monograph on Moldavian Prince Stephen the Great, but his first literary attempts date from the following year.
Was Mihail Sadoveanu successful in writing the monograph?
In 1897 a sketch story, titled Domnișoara M din Fălticeni and signed Mihai din Pașcani, was successfully submitted by Mihail Sadoveanu for publishing to the Bucharest-based satirical magazine Dracu.
When did Mihail Sadoveanu marry?
In 1901, Mihail Sadoveanu married.
Who did Mihail Sadoveanu marry in 1901?
Mihail Sadoveanu married Ecaterina Bâlu.
Where did Mihail Sadoveanu and Ecaterina Bâlu marry?
Did Mihail Sadoveanu and Ecaterina Bâlu have any children?
After being stationed as a guard near Târgu Ocna, Mihail Sadoveanu spent much of his home in the country, where he raised a large family.

Question: He many children did the couple have together?
Self-contained rewrite: How many children did Mihail Sadoveanu and Ecaterina Bâlu have together?