I thought I had narrowed the search down when I found a Julia Martin of the right age (mother) in the 1920 census living with a Gardner family in Brooklyn, but the head of the household was MARY Gardner. Nevertheless, this family was the only plausible one I found anywhere. The children in the household were Robert, James, Edward, Lily, and Harry, and I easily found the Gardner family in the 1910 census. Robert and ANNIE were the parents!
My search for Annie was put on hold until the 1930 census was released in 2002, By then, Annie was a widow and her son Robert was head of the household. Julia was not listed. When the 1940 census was released ten years later, I discovered that Annie Gardner was no longer enumerated—in Robert’s household, or elsewhere.
Wouldn’t my mother have been interested to know who Annie Gardner was and what became of her?
1. "Mrs. Annie Gardner," obituary, The Brooklyn (New York) Eagle, Wednesday, February 15, 1939, p. 11, col. 6.