Modern invention, likely combining Bree and the suffix -elle.
Breelle is a contemporary American name created by blending the Irish-derived name Bree, meaning 'strength' or 'exalted one', with the popular French feminine suffix -elle. It functions as a more elaborate version of Bree or a shorter alternative to Brielle. Because it is a modern coinage, it does not have a singular ancient etymology but carries the combined associations of its components.
Less common today
Breelle isn't in the latest US Top 1000. It last peaked at #5,608 in 2013.
US births per 5-year period, 1990βpresent (SSA data).