This Profile Freida unknown
Has Immediate Family:
Wife of Herbert (Rosenberg) Bloom (who until very recently was shown as Herbert (Herzl) Bloom)
Mother of David Bloom
Recently had Last Name changed from "Bloom" -- to "unknown"
And Birth Surname changed from "Unknown" to "kamm"
Is there any DOCUMENTATION supporting that?
The only Documentation I have seen for her is the Death Record for her son, David Bloom: https://www.geni.com/documents/view?doc_id=6000000179193288926
It gives David as "David W. Bloom" -- his father as "Hertz Bloom" -- and the Maiden Name of his Mother as "Frieda Unk"
The "Unk" in "Frieda Unk" would be for 'unknown'