Frances and Sebastian had one son I could find, Charles bc1878. Looks like 1910 they were living South Dakota. (Sebastians name has been mis-transcribed)

1910 United States Federal Census
Census & Voter Lists
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Name: Esbastran Koenigsberger
Age in 1910: 69
Estimated Birth Year: abt 1841
Household Members:
Name Age
Esbastran Koenigsberger 69
Fanny Koenigsberger 64
Charles Koenigsberger 22
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Name: Esbastran Koenigsberger
Spouse: Fanny
Birth: abt 1841 - location
Arrival: year
Residence: 1910 - city, Lawrence, South Dakota

Match quality: 1 out of 5 South Dakota Death Index, 1905-1955
Birth, Marriage & Death
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Name: Sebastian Koenigsberger
Death: dd mm 1923 - Lawrence