It has been pointed out - that you can also search for children of parents from the Search Forest of Dean Parish Records without using the Advance Search by:

In the surname : just type %

and you can put in the father's name (for baptisms only)
and also the mother's name (for baptisms only)

BUFFERY is also a spelt in many ways - but have found these children of Deborah before she married James Roberts at Newland 9 March 1835.

1826 - BUFFERY - Mary (father's forename - not stated) - mother: Deborah [?]
1831 - BUFFERY - Eliza Maria (father's forename - not stated) mother: Deborah - Parish: Coleford
1833 - BEOFFREY - Jemima (father's forename - not stated) mother: Deborah - Parish: Coleford

Deborah BUFFREY - baptised at Newland 14 October 1804, parents: Joseph & Sarah

1841 Census, Clearwell, Newland

ROBERTS

James - 35 - Quarryman
Debora - 35
Eliza - 10 (this is Eliza Maria 1831)
Simmons (as transcribed on Ancestry - Jemima - 5)
Harriot - 5
Emma - 3
Sarah - 3 months.