Bellemare ( ; ] ) is a common Norman surname, that means "somebody from Bellemare", name of several hamlets in Normandy (± 20). It is also one of the most common family names in Mauricie, Quebec. It is a compound of French "belle" "nice, pretty" and "mare" "mere, lake, pond", Norman word of Old Norse origin "marr" "sea", finally borrowed from Norman by French around 1600 as "pond, puddle".

Based on that paragraph can we conclude that this sentence is true?
In the hamlets of Normandy there are more than 20 families with the surname Bellemare.
Yes