Greetings. I know of two Daniell families in South Africa at that time. I have a Mary Daniell, daughter of Lt. Richard Daniell RN of Sidbury, near Grahamstown. She may be the one you are enquiring about. If so, she married Rice Daniel Jones (1822-1872)of Cape Town, son of Rice Jones Jones and Ann Thompson. Interesting is that her husband's sister Elizabeth Jones married Lt. Col Charles Augustus Daniell, son of Lt. Cyrus Daniell. I am descended from these two. I don't know the relationship between the two Daniell families. Can you help?