Marjorie Callear Birth 16 AUG 1912 • Seisdon, Staffordshire, England
For info. 
1939 register
Marjorie Callear  born 16 Aug 1912 Residence Seisdon, Staffordshire
the date of birth that you suggest fits with a Marjorie James whose birth was registered in Q3 1912 in West Bromwich.
Marjorie Callear Age   34, married
Birth Place   West Bromwich
Last Known Residence   Wednesbury, England
Departure Port   Southampton, England
Arrival Date   29 Jul 1947
Arrival Port   New York, New York, USA
Residence Place   England
Years in US   9/2/47
Citizenship Intention   No
Height   5 Feet, 1 Inches
Hair Color   Brown
Eye Color   Hazel
Complexion   Medium
Person in Old Country   D. R. Callear
Person in Old Country Relationship   Husband
Person in Old Country Residence   87 Leabrook Rd, Wednesbury
Person in US   L. Holt
Person in US Relationship   Aunt
Spouse   D. R. Callear
Ship Name   Mauretania
Marjorie James
Registration Quarter   1936 Jul-Aug-Sep
Registration District   Bilston Staffordshire
Spouse    DR Callear
Volume Number   6b
Page number   1577
Edit to add
D R Callear
Marriage Date   1936
Marriage Church   Methodist Church
Marriage Place   Kinver, Staffordshire
Spouse    Marjorie James