N.B. Rachael and Sarah may be separate spouses of Morris Joseph. He had at least two wives.
Death record for Barry Mogilevkin (1940);
Father's name: Morris Joseph Mogilevkin;
Mother's name: Rachael Martin
Death record for Louis Morgan (1933):
Father: Morris Joseph Mogileokin;
Mother: Sarah [LNU]
↑ "Rhode Island Deaths and Burials, 1802-1950," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:F8H8-DBS : accessed 7 May 2016), Barry Mogilevkin, 04 May 1930; citing Pawtucket, Rhode Island, United States, reference item 1 p 12; FHL microfilm 1,941,126.
It may be possible to confirm family relationships with Rachel by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Rachel: