Hugh Blair came from,Ireland, Antrim in 1819 at age 64 to New Brunswick

[myself1]

There was a Hugh Blair who came from Ireland Antrim in 1819 he came to ST.James Charlotte County New Brunswick,religion Press

no idea who this Hugh Blair is but could be connected to the Blair line that married into the Gibson line, the Evans Line, the King line. of all who came from Ireland to ST.James Charlotte County New Brunswick.


a  John Russell Blair born 1822 in chaleur Bay in English known as Bay of Chaleur, he married Margaret king Gibson born 1837 married in 1863 in ST.James Charlotte county New Brunswick

names that run in the Blair line of John Russell Blair are names such as
Jacob,
James
William Isaac
Margaret Eleanor

[BallyaltikilliganG]

 I wondered if your Hugh Blair had a nephew named after him 5 years before emigrating . his 1812 birth lists his father as William.  see https://www.ancestryireland.com/family-records/birth-and-baptism-records-county-antrim-and-county-down/?search1=Hugh&search2=blair&condition=begins&submit=Search

there are two so called census substitutes one in 1796  Flax growers of ireland the other Tithes Applotment Books 1823-1837 Tithes Applotment Books based upon the index work of the Irish Genealogy Hub’s listing for each parish in Northern Ireland, but you need to know the parish.The relevant original books are in the Public Record Office of Northern Ireland (PRONI) Belfast

1796  Flax growers of ireland from https://www.failteromhat.com/flax/antrim.php
Blair    John        Ballymoney Antrim

1823-1837 Tithes Applotment Books
104 Blair head of homesteads listed in the tithes so reducing them to those carrying any of your short list of repeated first names you end up with just two civil parishes Carnmoney (outer north Belfast [Shankill] parish ) and Finvoy (The parish is bounded by County Londonderry and the civil parishes of Ballymoney, Killraghts, Killagan and Rasharkin[4] ie north Antrim)
arranged by civil parish then townland
Blair, Wm.   Townland: Drumnadrough Year: 1835   Carnmoney   Antrim
Blair, James   Townland: Ballycraigy Year: 1835   Carnmoney   Antrim
Blair, James   Townland: Lower Ballysillon Year: 1826   Belfast      Antrim
Blair, William   Townland: Ballygilbert Year: 1834      Carncastle   Antrim
Blair, William   Townland: Hograms Land Year: 1816   Carrickfergus   Antrim
Blair, James   Townland: Ballyhibistock Year: 1827   Derrykeighan   Antrim
Blair, James   Townland: Ballyhibistock Year: 1827   Donegore    Antrim
Blair, WilliamTownland : Shanaghy Year: 1834   Finvoy   Antrim
Blair, William, Jr. Townland : Killens North Year: 1834Finvoy   Antrim
Blair, William, Sr.Townland : Killens North Year: 1834Finvoy   Antrim
Blair, Willm.   Townland : Shanaghy Year: 1834   Finvoy   Antrim
Blair, James   Townland : Killens North Year: 1834   Finvoy   Antrim
Blair, James   Townland: Ballytober Year: 1834      Islandmagee   Antrim
Blair, Willm.   Townland : Ballywee Year: 1833      Kilbride   Antrim
Blair, Willm.   Townland : Grange of Kilbride Year: 1833   Kilbride   Antrim
Blair, James   Townland : Ballybeg Year: 1825      Portglenone   Antrim
Blair, Wm.   Townland: Ballyfore Year: 1830      Raloo      Antrim
Blair, Wm.   Townland: Ballyvallagh Year: 1830      Raloo      Antrim
Blair, Wm.   Townland: Ballyfore Year: 1830      Ramoan   Antrim
Blair, Wm.   Townland: Ballyvallagh Year: 1830      Ramoan   Antrim
Blair, James   Townland: Lifsnagawver Year: 1834   Rasharkin   Antrim
Blair, James   Townland : Lower Ballysillon Year: 1826   Shankill   Antrim
just so you are aware
Blair, Hu.   Townland: Drumanee Year: 1828   Ballyscullion   Antrim & Derry
Blair, Hu.   Townland: Tamlaghtduff Year: 1828   Ballyscullion   Antrim & Derry
Blair, Hugh   Townland : Rosedermot Year: 1825   Dunaghy   Antrim
Blair, Hugh   Townland : Mullans Year: 1834   Finvoy   Antrim
Blair, Hugh   Townland : Rosnashane Year: 1834   Finvoy   Antrim
another useful source is http://www.dippam.ac.uk/ied/ which includes emigrant information you just type in Blair
eg FOR NEWCASTLE & PHILADELPHIAThe Beautiful Fast Sailing American Brig,
RETRIEVE, Berthen 550 Tons,DANIEL HUNT, Master.
Just arrived from Philadelphia, after a passage of 28 days and
will be clear for the above Ports, by the 18th of August next.
As a number of passengers have been engaged in America for
this Vessel, very few can be accomodated; it is therefore
requested that those who intend going in her will make early
application to
MR.ALFRED LOUGHREY, at Mrs. Collen's (who canme by, and goes
out in the Vessel); Captain Hunt, on board, or the Subscriber,
who wil supply the Vessel with abundance of good Provisions
and Water.SAMUEL GLEN,LONDONDERRY, SHIP-QUAY, JULY, 12.
                    THANKS OF THE PASSENGERS.
WE the undersigned Passengers on board the Brig RETRIEVE,
CAPTAIN HUNT, beg for him to accept our thanks for his polite
attention to us during the Passage from Philadelphia, to
Londonderry.
                           JOHN A.STEVENSON,
                           GEORGE G.RICHARDSON,
                           ADAM DOUGLAS,
                           JOHN FISHER,
                           JOHN BLAIR
                           ROBERT THOMSON.
has John arrived to take other Blair back with him? 
Good luck hoping others join in