Four Lines of Descendancy from Robert III Stewart of Scotland to Robert Louis Stevenson ..1 King Robert III Stewart of Scotland (about 1337 - 1406) .. + Annabella Drummond ( - 1401) ....2 Mary Stewart (about 1383 - 1458) .... + Sir James Kennedy ( - before 1408) ......3 Sir Gilbert Kennedy ( - after 1479) ...... + Catherine Maxwell ........4 Catherine Kennedy ........ + Sir Alexander Montgomery (1445 - 1468) ..........5 Sir Hugh Montgomery (about 1460 - 1545) .......... + Helen Campbell ............6 Margaret Montgomery (1487 - 1523) ............ + Sir William Semphill (1485 - 1552) ..............7 Sir Robert Semphill .............. + Isabel Hamilton ................8 Margaret Semphill ................ + David Hamilton ..................9 Katherine Hamilton .................. + James Hamilton ....................10 Robert Hamilton .................... + Beatrix Hamilton ......................11 Janet Hamilton ...................... + John Hamilton (1569 - 1648) ........................12 Gavin Hamilton (1624 - 1681) ........................ + Jane Montgomery ..........................13 Sir Robert Hamilton (1645 - 1705) .......................... + Elizabeth Cochrane ............................14 Louisa Hamilton (1686 - 1750) ............................ + James Balfour (1681 - 1737) ..............................15 James Balfour (1705 - 1795) .............................. + Cecelia Elphinstone (1705 - 1780) ................................16 John Balfour (1740 - 1814) ................................ + Jean Whytt (1750 - 1833) ..................................17 Lewis Balfour (1777 - 1860) .................................. + Henrietta Scott Smith (1787 - 1844) ....................................18 Margaret Isabella Balfour (1829 - 1897) .................................... + Thomas Stevenson (1818 - 1887) ......................................19 Robert Louis Stevenson (1850 - 1894) ..............................15 Louisa Balfour .............................. + Robert Whytt ................................16 Jean Whytt (1750 - 1833) ................................ + John Balfour (1740 - 1814) ..................................17 Lewis Balfour (1777 - 1860) .................................. + Henrietta Scott Smith (1787 - 1844) ....................................18 Margaret Isabella Balfour (1829 - 1897) .................................... + Thomas Stevenson (1818 - 1887) ......................................19 Robert Louis Stevenson (1850 - 1894) ..............7 Helen Semphill .............. + Sir Alan Cathcart ( - 1547) ................8 Margaret Cathcart ................ + John Robertoun ..................9 John Robertoun .................. + Christian Dundas ....................10 Isabella Robertoun (1546 - 1591) .................... + Gavin Hamilton (1539 - 1591) ......................11 John Hamilton (1569 - 1648) ...................... + Janet Hamilton ........................12 Gavin Hamilton (1624 - 1681) ........................ + Jane Montgomery ..........................13 Sir Robert Hamilton (1645 - 1705) .......................... + Elizabeth Cochrane ............................14 Louisa Hamilton (1686 - 1750) ............................ + James Balfour (1681 - 1737) ..............................15 James Balfour (1705 - 1795) .............................. + Cecelia Elphinstone (1705 - 1780) ................................16 John Balfour (1740 - 1814) ................................ + Jean Whytt (1750 - 1833) ..................................17 Lewis Balfour (1777 - 1860) .................................. + Henrietta Scott Smith (1787 - 1844) ....................................18 Margaret Isabella Balfour (1829 - 1897) .................................... + Thomas Stevenson (1818 - 1887) ......................................19 Robert Louis Stevenson (1850 - 1894) ..............................15 Louisa Balfour .............................. + Robert Whytt ................................16 Jean Whytt (1750 - 1833) ................................ + John Balfour (1740 - 1814) ..................................17 Lewis Balfour (1777 - 1860) .................................. + Henrietta Scott Smith (1787 - 1844) ....................................18 Margaret Isabella Balfour (1829 - 1897) .................................... + Thomas Stevenson (1818 - 1887) ......................................19 Robert Louis Stevenson (1850 - 1894)