Thank you so much for the information you found! The people answering questions on these message boards are phenomenal, you included, Robert.
I believe the information you found verifies that the deceased Marianne Oldaker was the daughter of England-born cabinet maker Barnard Oldaker (sometimes spelled Oldacre in records) and his wife, also from England, Nancy Waters (maybe Warters) Oldaker.
The information you gave also verifies family lore my friend has that the Oldaker family lived in Belgium for a while. Plus, you provided the name of another child of Barnard and Nancy Oldaker, Sophia Emma, who died in 1831 in Rotterdam.
You are amazing.
Most gratefully for my friend, others researching this family line, and myself -
Jean E. DeLauche