Andy and Jane Flax,
My great-grandmother (GGM) was a Flachs in Romania. Her name was Ruchli Flachs (aka Rachel Flachs). I don't have any info about where her father's (Itzic Flachs, a merchant) family was from, but could have originated in Germany, but I don't have any documentation to that effect. GGM Ruchli married Haim Heller some time between 1885-1890. I have some Romanian documents regarding my GGM's family during the late 1800's and early 1900's.
If you have interest or information, please message me.