I have information on the descendants of Pocahontas down to Mary Bolling (great great great grandaughter0 of Pocahontas who married Richard Bland in 1751 and had by him 5 children. Mary's great grandfather is Col Robert Bolling who marrie Jane Rolfe in 1765.
There are a lot of individuals name Robert Bolling in the Bolling Family but not all of them descend from Pocahontas. Col Robert Bolling after the death of Jane Rolfe married again and had a number of children by his 2nd wife which are not descendants of the great Indian Princess named Pocahontas.
You might want to go to the Bolling family Message Board and pull up message #2285. It has some 48 pages of information on the Bollings of Yorkshire and Virginia. This may give you a clue as to just which Robert Bolling you descend.