Middle name from the Congreve Family Tree at ancestry by anyacongreve.

In the October to December 1915 birth index Ronald J. C. Holman, mother’s maiden name Wragg, Sheffield, Yorkshire, volume 9c, page 1068.

1939 England and Wales Register
124 Loxley Road, Sheffield, West Yorkshire
1. Henry M. Holman, born August 19 1883, married, public works contractors labourer
2. Gertrude Holman, born March 20 1883 [an error], married, unpaid domestic duties
3. Ronald Holman, born September 13 1915, single, underground heavy hewer hand (coal pit)
4. Neilka Holman [later Wilson], female, born June 23 1917, single, glazier (unemployed]
5. Kenneth Holman, born October7 1919, single, bill hand heavy back

In the July to September 1941 marriage index Ronald J. O. Holman and Nora Roberts, Sheffield, Yorkshire, volume 9c, page 1050.

In the October to December 1962 death index Ronald J. O. Holman, Sheffield, Yorkshire, volume 2d, page 44.