Fifth and last child.
Married Mr. Samuel Webber at Farway, Devon in 1847.
See http://search.findmypast.com.au/record?id=gbprs%2fdev2%2fmar%2f119707%2f2&_ga=1.168350433.1995048253.1439807319
Moore family tradition says they emigrated to America, to seek their fortune in the gold rush there. Migrated to America with her siblings Ophelia, Richard and Louisa Matilda, and their respective families in circa 1850 (more likely they emigrated after their mother Harriet died in February 1851).
Harriet produced 1 son who, according to Moore family tradition, married his cousin in America.
In fact, the Moore family tradition that cousins descended from the Pursey line (the children of Ophelia Pursey and Harriet Pursey) married in America, is pretty close.
John Webber and Georgiana Potts were not cousins by blood, but were related by marriage (Georgiana's aunt Harriet married Samuel Webber, whose brother was John Webber and it was John who married Georgiana) - close enough for loose terminology to call them "cousins".
The England census of 1851 records 2 children for Samuel and Harriet - Mary J. Faunces Webber (aged 3) and William F. Webber (aged 1). Samuel, Harriet and their 2 children were recorded as visiting Samuel's father William in Salicombe Hamlet, Farway, Devon, on the night of the census.