Helen/Ellen Mitchell ~1792 - 1863
Born ~ 1792 in Ireland to James Mitchell, plasterer, & Helen Kennedy. No baptism in Dublin in the 1790s No marriage in Dublin of James Mitchell to Helen Kennedy
1819. Elenor Mitchell marries widower Matthew Mason in St Paul's C of I in Dublin on 7/2/1819, by banns, whilst he was serving in the Army in Ireland

http://churchrecords.irishgenealogy.ie/churchrecords/
At least 3 children born in Ireland, one of whom, Niel Mason, dies young. Daughters Ann & Helen were born there ~1818/19 & 1820/21: no baptism found on Dublin site .
Then James Mason born in Glasgow ~ 1831
1841C Helen Mason, 50, is living Thomson Lane, Barony with her husband and 3 children
| Mathew Mason | 50 | Army P. . . Cotton HLW | b. Lanarkshire |
| Helen Mason | 50 | b. Ireland | |
| Ann Mason | 20 | Cotton PLW | b. Ireland |
| Helen Mason | 15 | Cotton PLW | b. Ireland |
| James Mason | 10 | All ages prob. rounded down to nearest 5 | b. Lanarkshire |
1851C. Helen Mason, 60, is living 249 Duke Street, Barony, with her husband and 2 children
| Matthew Mason | 66 | HLW | b. Glasgow |
| Helen Mason | 60 | b. Ireland | |
| Helen Mason | 30 | PLW | b. Ireland . . thus b.~1819-1821 from the 2 censuses |
| James Mason | 20 | Gilder | b. Glasgow . .thus b.~1831 |
1855. Matthew Mason dies, 71, cotton weaver pensioner, at 114 Westmuir, Parkend, High Church Glasgow on 12/9/1855.. He died of Paralysis 4 days and is buried in the Eastern Necropolis Glasgow. Informant was Helen Mason, daughter . He was born Hockwell/Stockwell Street, Glasgow to parents James Mason, wright, and Mary Crawford. His 1st wife was Rachel -- with who he had 5 children. His 2nd wife was Helen Mitchell, with who he had 4 ??children, Ann 37, Helen 35, Neil died & James 24- all this writing unclear . He lived 29 years in Glasgow- this presumably continuous up to his death, so would have returned from Ireland in~ 1826, around the age of 42.
1861C. Helen Mason, 69, widow, laundress, is living West Muir Street, Barony, Lanark with daughter Helen
| Helen Mason | 69 | widow laundress | b. Ireland |
| Helen Mason | 60 | PL cotton weaver | b. Ireland |
Have not found her in 1871C, so did she die 1861-1871?.
But, her 2 children, Helen Mason 50 & James Mason 40, are at 116 Baird Street Parkhead in the 1871C, so I am pretty sure she must have died 1861-1871
Finally found her.
1863. Helen Mason, 70, widow of Matthew Mason handloom weaver, dies 2/2/1863 at 114 Westmuir Street, Glasgow of Bronchitis. Informant Helen Mason, daughter.. Parents were James Mitchell, plasterer, journeyman, & Helen Kennedy. Unfortunately this dc is not nearly so informative as that of her husband just 8 years earlier!!, so we will never know where in Ireland she came from.
