Hi Jason
It's late here and I'm probably mis-reading this

but isn't Andrew a son to John Shiells b. 1795, not a brother.
".. with concurrence of John Shiells, farmer, Myles, near Tranent,
his father...."
Andrew does have the dispute with a brother (unnamed). Given that we only have three sons for John: Andrew/George/John and George was living with Andrew in England later on, then maybe the Andrew's dispute was with John who we haven't tracked through the censuses (and by the sounds of it, may have been living in Newcastle).
From the 1881 census entry that we already have (looking like he resolved his financial difficulties of the 1850s

):
1881: B Callerton Farm (2) , Black Callerton, Northumberland
Ref: RG11 / Piece: 5099 / Folio: 125 / Pg 13
Head: Andrew SHIELLS 55, Farmer Of 363 Ac Employing 6 Men 5 Women b Scotland
Wife: Isabella SHIELLS 40 , Farmers Wife Winlaton, Durham
Son: John SHIELLS 3, b Newburn, Northumberland
Dau: Mary E. SHIELLS 1 , b Newburn, Northumberland
Brother: George SHIELLS , 53, Farm Serv 2 Assistant to Herd (Ag Lab Indoor) , b Scotland
Nephew: James SHIELLS 16 Scholar, b Newburn, Northumberland,
Nephew: George SHIELLS 14, Scholar, Newburn, Northumberland
Monica
