Looking for Relatives: Barkin and Kendzur

[Diane Barkin Harris]

According to the Ellis Island ships records 2 of my 5 relatives arrived in the U.S. from Brest in 1906. This was Fannie and Lillie Barkin. I can't seem to find information on their brother Morris my father's father, nor his father Sai or Shya? Morris was born about 1890 to Sai and Rifka (Slatkin) Barkin. I was wondering if there is a way to find birth records and information about Morris, Sai and/or Rifka. Sai had brothers Louis and Samuel.
New York census records show that Morris Barkin and wife Sophie Kendzur (any information on her?) arrived in the U.S. in 1902 and 1896, respectively.
Thank you in advance for any help/nformation you can lend.
Diane Harris