Alexander Rowan and wife Jane Maxwell came from County Monaghan in Ireland to NB 1821. They settled in Saint John.

children mentioned were:
1) Henry Rowan
2) Stephen Rowan
3) Joseph Rowan b. 21 Dec 1824, m. in Boston, MA, Catherine Manning b. Cork, Ireland and came to Saint John when 7 years old: had six children
4) Alexander Rowan
5) Mary Rowan
6) Elizabeth Rowan. 

PANB:MC80/122 E.C. Wright’s Saint John ships and their builders, pages 140-143
PANB:MC80/338 I. Allen Jack’s Biographical Review, page 427
Jane Maxwell was the sister of Henry Maxwell of Saint John.