Did Rebecca Samuel, the gt. gd. mother have any siblings?

Question

I have a mitochondrial connection with Rebecca found through Family Tree Dna and a Rowland Esias an American ex army chaplain, deceased.

Answer 1

Where did Rebecca live? When? Can you give us more info, please, so we can help?

Answer 2

1940 US Census

Rebecca Samuel 38, born 1902 British West Indies, wife of Cornealus Samuel 41, born British West Indies. Residence in 1940 / 1935 Assembly District, 20 Manhattan, New York City, New York.

Children are Cecil 10, Maurice 6, Ruby 4, Mario 2 and Maryalan 0. All born in New York