I think the marriage and the death both have the wrong name for her father.
Death: 1926; 1301 Govan Road, Govan, Glasgow, Lanark, Scotland; usual
residence 125 Caledonia Road, Glasgow; Catherine Sands, married to 1st
Walter Dow, tailor and 2nd Alexander Sands, slater; age 77; parents Donald McPhee, farmer deceased and Janet McPhee M.S. Stewart, deceased; died from Hemiplegia; witness Annie Sloan, step daughter, 97 Kidston Street, Glasgow;
certificate #175
Marriage: 21 Jul 1844; John McPhee labourer, Mursherlich and Janet, daughter of Allan Stewart, Appin.
Batch: M115204
But where is Catherine?
1861
Civil Parish: Kilmallie
County: Argyle
Address: Murshiarlich
John McPhee Head 40 Labourer Kilmallie
Janet Wife 36 Appin Argyllshire
Janet dau 13 Forwillm, Inverness [Fort William]
Ann dau 11 Glencoe
Allan son 9 Glencoe
??
Alexander son 6 Kilmallie
Janet dau 4 Kilmallie
Donald son 1 Kilmallie
1871
Registration District: Kilmallie
Civil Parish: Kilmallie
County: Argyll
Address: Corpach Road
John Mcphee Head 50 Labourer Kilmallie
Jessie Mcphee Wife 46 Labourer's Wife Appin, Argyll
Allan Mcphee 19 Ag Lab Appin
Alex Mcphee 14 Scholar Kilmallie
Jessie Mcphee 12 Kilmallie
Mary Mcphee 8 Kilmallie
Flora Mcphee 6 Kilmallie