William married Nichola Maxwell on 9 May 1593 in Lag Tower,Dunscore,Dumfries,Scotland. Nichola (daughter of Sir John Maxwell, 4th Lord Herries and Agnes de Herries) was born on 1 Jan 1578 in Dornoch, Sutherland, Scotland; died in 1605 in Dumfries, Dumfriesshire, Scotland; was buried in 1605 in Dunscore, Dumfriesshire, Scotland. [Group Sheet] [Family Chart]

1. Robert Grierson was born in 1596 in Lag Tower, Dunscore, Dumfriesshire, Scotland; died on 21 Feb 1654 in Lag, Dumfriesshire, Scotland, United Kingdom; was buried in 1654 in Dunscore, , Dumfries and Galloway, Scotland.
2. Sara Elizabeth Greirson, Lady of Craigdarroch was born in 1593 in Lag, Dumfries-Shire, Scotland; died on 3 Feb 1664 in Craigdarroch, Dumfries-Shire, Scotland.
3. Helena Grierson was born in 1594 in Lag Tower, Dunscore, Dumfries, Scotland; died in 1617 in Mouswald, , Dumfries, Scotland.
4. Helena Grierson was born about 1595 in Closeburn, Dumfriesshire, Scotland.
5. William Grierson was born in 1597 in Dunscore, Dumfriesshire, Scotland, United Kingdom; died on 22 Jun 1655 in Brachoch, Dumfries, Dumfries, Scotland.
6. Alexander Grierson was born in 1598 in Lag Tower, Dunscore, Dumfries, Scotland; died in 1655 in , , , Scotland.
7. John Grierson, of Capenoch was born in 1599 in Lag Tower, Dunscore, Dumfries, Scotland; died on 20 Sep 1649 in Capenoch, Dumfriesshire, Scotland, United Kingdom.
8. Isabel Grierson was born in 1602 in Lag Tower, Dunscore, Dumfries, Scotland; died in 1629 in Dumfries, , Dumfries, Scotland; was buried in Old Dunscore Cem., Dumfries, Scotland.
9. John Grierson was born before 1601 in Dumfriesshire, Scotland, United Kingdom.
10. Lady Agnes Grierson was born in 1604 in Lag Tower, Dunscore, Dumfries, Scotland; died on 3 Feb 1664 in Dumfries, , Dumfries, Scotland; was buried in Dumfries, Dumfries and Galloway, Dumfries, Scotland, United Kingdom.
11. Baron Sir James Grierson, Of Capenoch was born in 1604 in Capenoch, Dumfriesshire, Scotland; was christened in 1604; died on 29 Jan 1666 in Capenoch, Dumfrieshire, Scotland; was buried in Feb 1666 in Capenoch, Dumfrieshire, Scotland.
12. James Grier was born in 1604 in Scotland; died in 1666 in Scotland.
13. Lancelot Grierson was born in 1605 in Lag Tower, Dunscore, Dumfries, Scotland; died on 20 May 1629 in , , , Scotland.

Roger married Lady Helena Douglas on 21 Apr 1548 in Scotland. Helena was born in 1530 in Drumlanrig, Dumfrieshire, Scotland; died in 1578 in Lag Tower, Dunscore, , Dumfries, Scotland; was buried in 1578 in Old Dunscore Cemetery Dunscore, Dumfries and Galloway, Scotland. [Group Sheet] [Family Chart]