Flag created by CincyFlags for the neighborhood. 
Its symbolism, according to CincyFlags in [1]:
"An illustrated rose stretches across all three fields of color as a strong and clear reinforcement of the neighborhood’s unique name.

Three color fields referencing Roselawn’s geography: Black on the West for the Mill Creek, White in the middle for the Reading Road Corridor, and Blue from the neighborhood’s various wayfinding totems."
Own work using: https://www.cincyflags.com/roselawn-1
CincyFlags