 |

The preparatory sketch for the painting was inspired by schematic genealogical charts of the period. |
 |
 |
At the upper right, Kahlo drew and labeled portraits of her paternal grandparents, Jakob Kahlo and Henriette Kaufmann, who were German Jews of Hungarian descent. (The first names are misspelled in the drawing.) On the left, Kahlo sketched portraits of her maternal grandparents, Antonio Calderón, a native of Michoacán, and Isabel González, the daughter of a Spanish general. The lines charted by this family tree lead to portraits of Kahlo's parents, Guillermo Kahlo, a German-Jewish immigrant, and Matilde Calderón, a mestiza (a woman of mixed European and Mexican Indian decent). |
 |

|
Frida Kahlo (1907-1954) Study for My Grandparents, My Parents, and I, 1936 (click image for more)
|
|
 |
On the paternal side, Kahlo sketched a school of sperm, and on the maternal side, a huge inseminated egg cell. An image of a camera appears to the right of Guillermo Kahlo, indicating his profession as a photographer.
|
 |
|