The mother of Sophie Emma was Nancy Warters and died in Rotterdam, South-Holland, The Netherlands on March 16, 1831. She was 42 years and 6 days old.
Her father was John Warters and her mother Ann Bost.
Nancy Warters was born in Westerham, Great Brittan.
Her husband was Barnard Olaaker (?).
The death certificate of Sophia Emma Oldaker is attached. It is from the registry of birth, marriage and death from Rotterdam and written in Dutch. Certificate nr. 821 on page a 138v.
I found this on Ancestry. com.
The death certificate of Marianne Oldaker and Nancy Warters I still have to find. When I have found them I will send you them too.
Robert A. van Duuren