Notes:

1 - For some reason he appears as Peter in the MacGregor extractions from the parish register of his son Archibald. I suspect this is a mistake on the part of Dr. Richard McGregor as the IGI extraction has him as John.

2 - John McGregor 16.2.1828 52, wife Elizabeth McFarlane 5.1.1864 76, children James d. London 16.11.1839 27 buried Bunhill Field [Bunhill Field is a burying ground in London], Duncan 18.5.1833 18, Archibald 28.5.1855 18, Peter .8.1841 19, Elizabeth .3.1846 22, Agnes .6.1851 25, Mary 28.6.1880 80 (note by MacGregor - John McGregor and Elizabeth McFarlane married 29.3.1808, Callendar marriage register)
[Mitchells MI's South Perthshire - Kilmahog #62]

3 - IMO JOHN MACGREGOR WD 16 FEB 1828 AGE 52
HIS WIFE ELIZABETH MACFARLANE WD 5 JAN 1864 AGE 76
THEIR CHLDRN JAMES DIED LONDON 1839 – BURIED BUNHILL FIELD
DUNCAN MAY 1833 AGE 18
ARCHIBALD 1835 AGE 18
PETER 1841 AGE 19
ELIZABETH 1841 AGE 22
AGNES 1851 AGE 25
MARY 1880 AGE 80
[Monumental Inscription-Kilmahog graveyard -image at http://www.incallander.co.uk/kilmahog%20churchyard/images/kilmahog11.jpg]

John married Elizabeth McFarlane on 29 Mar 1808 in Callander parish, Perthshire, Scotland. Elizabeth (daughter of Duncan Macfarlane, in Claish Farm and Margaret Ferguson) was born on 21 Feb 1786 in Callander, Perthshire, Scotland; was christened on 23 Feb 1786 in Parish Church, Callander, Perthshire, Scotland; died on 5 Jan 1864; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland. [Group Sheet] [Family Chart]

1. Margaret MacGregor was born on 9 May 1808 in Callander, Perthshire, Scotland; was christened on 14 May 1808 in Callander, Perthshire, Scotland.
2. Mary MacGregor was born on 3 Aug 1810 in Callander, Perthshire, Scotland; was christened on 13 Aug 1810 in Callander, Perthshire, Scotland; died on 28 Jun 1880; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.
3. James McFarlan MacGregor was born on 10 Jul 1812 in Callander, Perthshire, Scotland; was christened on 13 Jul 1812 in Callander, Perthshire, Scotland; died on 16 Nov 1839 in London, Middlesex, England; was buried in Bunhill Fields, London, Middlesex, England.
4. Margaret McGregor [MacGregor] was born in Aug 1814 in Callander, Perthshire, Scotland; died on 4 Jan 1815 in Callander, Perthshire, Scotland.
5. Duncan McGregor [MacGregor] was born on 28 Oct 1815 in Callander, Perthshire, Scotland; was christened on 2 Nov 1815 in Callander, Perthshire, Scotland; died on 18 May 1833; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.
6. Archibald McGregor [MacGregor] was born on 14 Nov 1817 in Callander, Perthshire, Scotland; was christened on 16 Nov 1817 in Callander, Perthshire, Scotland; died on 28 May 1835; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.
7. Peter MacGregor was born on 3 Jan 1822 in Callander, Perthshire, Scotland; was christened on 9 Jan 1822 in Callander, Perthshire, Scotland; died in Aug 1841 in Callander, Perthshire, Scotland; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.
8. Elizabeth McGregor [MacGregor] was born on 3 Mar 1824 in Callander, Perthshire, Scotland; was christened on 6 Mar 1824 in Callander, Perthshire, Scotland; died in Mar 1846; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.
9. Agnes McGregor [MacGregor] was born on 3 Apr 1826 in Callander, Perthshire, Scotland; was christened on 11 Apr 1826 in Callander, Perthshire, Scotland; died in Jun 1851 in Callander, Perthshire, Scotland; was buried in Kilmahog Graveyard, Callander, Perthshire, Scotland.