William McKenney came from north of Ireland to NY, then to NB in 1783 as Loyalists. The family settled in Dumbarton, Charlotte County. His wife’s name is not given.
1) William McKenney Jr. b. 1772, d. c1854, m. Elizabeth Hubbard born 1781, d. after 1871: settled at Chocolate Cove on Deer Island
2) John McKenney b. 1785, d. 1862, m. 1809 Rachel Leonard b. 1788, d. 1877: settled at Chocolate Cove on Deer Island
3) Margaret McKenney born 1788, d. 1842, m. 28 Mar 1809 John F. Fountain born 1788, d. 1828
There probably were more children.
PANB:MC80/21 Martha Barto’s Passamaquoddy: Genealogies of West Isles families, pages 169-171.