Since I cant seem to post an image this is the only way I can seem to post the tree so far.
William Roberts + Mary RobertsPossible Children:Mary RobertsB:1777 Stoke Dameral, Devonport,County, England
John RobertsB:1779 Stoke Dameral, Devonport,County, England
John RobertsB:1789 Stoke Dameral, Devonport,County, England
Caroline Mary RobertsB:1800
Francis Roberts - Sailor, Customs House Officer
B:25 Dec 1794 Devonport, Devonshire, Devon, England
D:14 Apr 1859 St George in the East, London, United KingdomFrancis Roberts + Grace Jasper:Possible Children:William Jesper RobertsB:09 Jun 1816 East Stonehouse, Devon, England
D:Abt. 1820 Stoke Dameral, Devonport, Devon, England
Henry Francis RobertsB:02 Nov 1817 East Stonehouse, Devon, England
D:June 1857 London, United Kingdom
Francis John James RobertsB:4 May 1821 Middlesex, England
D:1861 Boston, Massachusetts
Elizabeth Grace RobertsB:17 jan 1829 St George in the East, London, England
D:06 feb 1909
Frances Grace RobertsB:19 March 1834 St George in the East, London, middlesex,England
D:1907 Wandsworth, London, UK
John Thomas Roberts - Sailor, Miner, Farmer
B:21 Jan 1827 Elmham, Kent, England
D:5 MAR 1894 'Homedale', Wagga Wagga, New South Wales, AustraliaPossibles:
18 Jun
1766 William ROBERTS married
Mary GRILLS = Stoke Damerel, Devon, England
31 May
1773 William ROBERTS married
Mary WOLLAND = Stoke Damerel, Devon, England
24 July
1774 William ROBERTS married
Mary THOMAS = Stonehouse Devon.
18 May
1779 William ROBERTS (a shoemaker) =
Mary LOYNES (of Tavistock) at Plymouth Charles
11 Nov
1787 William ROBERTS (a butcher) =
Mary LANE at Plymouth St Andrew
20% chance if I take a guess