Andrew Ritchie, born c1810 in Ireland, died 22 Sep 1859. He came to NB in 1826 and settled in Fredericton, York County. He married in 1830, Augusta Anderson, born c1811 in NB, died 24 Dec 1897, the daughter of William and Mary Anderson.

children mentioned on tombstone and in 1851 Fredericton census:
1) Marshall Ritchie born c1831, died 1892
2) James William Ritchie b. 1833, d. 28 Sep 1836
3) Mary G. Ritchie b. 1835, died 20 Nov 1836
4) Hannah Barker Ritchie b. c1837, m. Henry B. Clarke
5) Mary A. Ritchie b. c1839, m. James D. McPherson
6) Sarah Ritchie b. 1840, d. 1912
7) Elizabeth Ritchie b. Oct 1841, d. Apr 1926, married James Maxwell
8) Augusta Ritchie born c1843, married Joseph C. Risteen
9) James S. Ritchie born c1846, d. 16 Sep 1869. 

PANB:MC80/132 Lillian M.B. Maxwell’s The old grave-yard, page 106
see PANB: MC80/145 Louise Hill’s Fredericton, New Brunswick, British North America, pages 65-67 which state that Andrew came to NB in 1826 with his grandfather, uncles and aunts: Andrew alone settled in Fredericton. 

James Ritchie, born in County Donegal, Ireland, married Miss Stevenson. They came to NB late in life and settled in Saint John.

1) Robert Ritchie b. in Ireland, died 1871, m. Anna Reid b. – , d. 1841: had five children in Ireland before coming to NB in 1826 and settling in Saint John: had two more children in NB
2) Matthew Ritchie: a Methodist clergyman
3) John Ritchie
4) Samuel Ritchie
5) William Ritchie
6) Andrew Ritchie
7) Mary Ritchie. 

PANB:MC80/338 I. Allen Jack’s Biographical Review, pages 457-458. 

Marmaduke Ritchie, born 1811 in Belfast, Ireland, died in 1897. He came to NB in 1832 and settled in Saint John. He married, in 1837, Catherine Hunter, born 1819 in Ireland, died 1897, the daughter of Francis Hunter.
Their son, Robert J. Ritchie b. 12 Oct 1843, in Sint John, d. 5 Apr 1932, m. Sep 1877 Mary Short d/o John Short of St. Stephen, NB: they had one son. 
PANB:MC1156 Graves Papers: Robert J. Ritchie, 1 page
see also PANB: MC80/338 I. Allen Jack’s Biographical Review, pgs 343-344 which says Marmaduke died in 1887: Francis Hunter came from Kings County, Ireland to NB in 1819: settled in Saint John County. (Kings County, Ireland was renamed to County Offaly in 1921. This can be confusing to researchers since there is a Kings County in New Brunswick)