Kerry, some notes for the Carr/Kettle (Janet) family here
http://www.smeaton.org/Smeaton_Detailed_Genealogy.pdf starting from pg 65:
65. JANET"JESSIE"7 KETTLES (WILLIAM6, MARGARET5 SMEATON, JAMES4, JOHN3, DAVID2, DAVID1) was born Mar20, 1831 in Perth, PER, SCT. She married WILLIAM CARR Feb 16, 1851 in Kinnoul, PER, SCT. He was born1826 in Perth, PER, SCT, and died 1890 in Perth, PER, SCT...........
Annie, William Jnr's death in 1946 looks to have been in Scotland so that should hopefully provided further confirmation of his mother's details (as always, if known to the informant).
Monica