Thanks Olive,
I'll re-order my site to reflect this as the working theory, and will make it clear that it is such.
Here are two more records for the mix, both from 1855 in Glasgow:
CURRIE, Jackson- male-17 months old-born 110 Garngad Road, Glasgow.
Parents-John CURRIE, Chemical Labourer and Elizabeth CURRIE nee MCGRAW.
Died September 13, 1855 at Middleton Place, Garngad Road, Glasgow of Small Pox, no med attend. Buried Sighthill Cemetery, Glasgow as cert by Robert McIndoe, undertaker. Signed William CLARK, uncle.
CURRY, John-Chemical Labourer-male-39-born County Derry, Ireland-resident 6 yrs in Glasgow. Parents Jackson CURRIE, Day Labourer (dec) and mother
unknown. 1st Spouse-Margaret BURNSIDE (dec). Child-William 18.2nd
Spouse-Elizabeth MCGRAW. Children Elizabeth 4, Jackson dec at 8 months.
Died October 3, 1855 at Royal Infirmary, Glasgow. Residence being 9 Middleton Place, Glasgow. Died of Typhus Fever complicated with Bronchitis-ill 24 days as cert by Robert McIndoe, undertaker. Signed William CURRY, son
How many Jackson Curries can the world take...?! lol

Chris