That's 2 pieces of information about Patrick - he was alive in 1875 and was a bricklayer.
That means he wasn't the one shot in Ireland in 1871 (reply #7).
Is Patrick Sweeney who was in Darwen with wife Elizabeth in 1871 & 1881 one of yours?
1881 census Henry Street, Over Darwen Page 61 Piece/Folio 4206/56
Patrick Sweeney 65 head born Ireland navvy
Elizabeth 52 wife born Ireland
Mary 18 daughter born Over Darwen
Mary A Sweeney 5 granddaughter born Preston
+ 4 male boarders, (3 Irish navvies, 1 Welsh bricksetter)
1871 census Darwen
Patrick Sweeney 53 born Ireland
Elizabeth 40? born Ireland
Michael 20
Patrick 18
Austin 16
Bridget 16 born Darwen
Mary 8
I didn't note where the rest were born.
Austin short for Augustine was typical for Mayo.
This is a "blended" family. Mary was the child of both Patrick and Elizabeth. Older children were from previous marriage/s
Marriage St. Anne, Blackburn 1859
Patrick Sweeney Over Darwen
Elizabeth Sweeney
Groom's father Alexander Sweeney
Bride's father Simon Sweeney
Baptisms of 4 children at St. Joseph, Darwen
Thomas 1860; Mary 1862; Simon 1865; James 1866
https://www.lan-opc.co.ukBirth registrations Darwen sub-district, mother's maiden surname Sweeney
Thomas 1860; Mary 1862; Simon 1865; James 1866
(Lancashire BMD)
I can't identify birth registrations or find baptisms for the older children on 1871 census. There was at least 1 more Patrick Sweeney in Darwen whose wife was having children around that time. They may have been related - a Patrick Sweeney was godfather to child of another Patrick Sweeney.
I couldn't find Patrick & Elizabeth on 1861 census or 1891.
2 possible death registrations for Patrick Sweeney in Blackburn district 1882 and 1883.