These are likely to be all theirs. From FreeBMD, surname Young, mother's maiden name McMorris. * indiactes on 1939 Register
Surname First name(s) Mother District
Births Mar 1912 (>99%)
YOUNG George H McMorris Hartlepool *
Births Jun 1914 (>99%)
YOUNG Annie McMorris Hartlepool *
Births Dec 1919 (>99%)
Young James W McMorris Hartlepool
Births Mar 1921 (>99%)
Young David W McMorris Hartlepool *
Births Dec 1922 (>99%)
Young Sarah E McMorris Hartlepool *
Births Jun 1925 (>99%)
Young Kathleen McMorris Hartlepool
Births Mar 1928 (>99%)
Young Christopher McMorris Hartlepool
Births Dec 1929 (>99%)
Young Patricia McMorris Hartlepool * redacted?
Births Jun 1932 (>99%)
Young Peter McMorris Hartlepool
Births Sep 1935 (>99%)
YOUNG Mary McMorris Hartlepool