"Variant of Charlotte"
The name Charlsie is commonly a female name from the "English" origin.
Charlsie is an English pet form of Charlotte, built with the -ie ending that English uses for familiar forms such as Elsie and Patsy. Charlotte is the French feminine diminutive of Charles, which comes from the Germanic name Karl.
Charlotte means "Little and womanly, Strong courageous woman.".
The pronunciation of Charlsie is CHARL-see.