Elisa de Lamartine, born Mary Ann Elisa Birch, had two known children with her husband, Alphonse de Lamartine:
Unfortunately, both children died at a young age.
For more detailed information, you can refer to sources such as Wikiwand's article on Elisa de Lamartine and Geni's genealogy profile for Marie Louise Julie de Lamartine.
Here are some relevant images:
What event marked the birth of the Ashes competition?
Who is the birth mother of Chuckie, and how is she portrayed in the series?
How did Morningstar's career change after the birth of her first child?
How old was Gaius Novellius Marcellinus when he was buried?
What were the specific details of Aaltje van der Plaat's murder?