Probably born in Novopoltavka, Kherson Gubernia, Ukraine.

See http://www.generacionesmv.com/Generaciones/Kherson.htm about the early settlers of Monigotes, which suggests that the Aronson family came from Novopoltavka. There is a Aide Batia Aronson Trepetujin (1857 - 13 Aug 1945) who settled in early Monigotes, where Rosa Raquel Lea Aronson and her husband Azriel Blejer and his family also settled.

We know that the Blejer family were in Novopoltavka in 1858. We need to do more work on the 1858 Revision List for the Aronson family, since we skipped that family.