Rollo Frank 1876

I'm seeking info on Rollo Frank b Jul 1876 Chicago to Alexander Frank (b 1849 West Ontario Canada) and Maria Eunice Hoskins (b1848 Indiana).   Rollo had two children with Hannah Halch....Irene and Charlotte Isabel.  Charlotte Isabel (my great grandmother) was given up for adoption.  Rollo Frank remarried several times and moved to Florida.  Hannah Halch passed in Chicago.  There may have been more children from a later marriage.  I'd like to know if there are other descendants from Rollo.