Farley Conundrum in Brooklyn

I have a brick wall researching the Farley branch of my tree, despite a reasonable amount of information! I am at a loss to find the given name of their father, or the maiden name of their mother.

Siblings were:

May C. Farley (possibly actually named Margaret?, middle initial listed as C or K in census records, could be Margaret Catherine, or something like that)
born c. 1893 in New York.

Mary Grace (also listed as Grace Mary) Farley McDonald
born 1 Apr 1894 in Brooklyn, died 4 May 1938

Hugh James (sometimes James Hugh) Farley
born 7 Oct 1895 in Brooklyn, died 1(?) Jan 1981 still in Brooklyn. Possibly might have had a wife named Margaret.


Their mother Margaret was born in Ireland, most likely around 1861 or 1862. Their father was born in Ireland and must have died before 1905, I know nothing more about him.

The family is listed twice in the 1910 census.