"Blend of Bryn and Lee"
The name Brynnlee is commonly a female name from the "American" origin.
Brynnlee is a modern American formation rather than an inherited name. It joins Bryn, a given name of Welsh origin, to the -lee ending that descends from the English surname Lee, a pattern widespread in American girls' names coined from the late twentieth century onward. The name does not appear in United States birth records before 2001.
The pronunciation of Brynnlee is BRIN-lee.