Robert Cathera Royal Minikin was born in South Shields, Durham, England on 27 May 1887. His parents were Joseph and Catherine Minikin, nee Royal. He died in Folkestone, Kent, England on 20 February 1962.

Wills and Administrations, 1962
Minikin, Robert Royal, of 86, Cheriton Road, Folkestone, died 20 February 1962.
Administration London 26 April to Mabel Annie Minikin, widow.    Effects £4589 10s.

Graduationship, 24 April 1909
Minikin, Robert Cathera Royal, Marine Engineer, 45 Mortimer Road, South Shields, born 27 May 1887.
General Education: 5 years, Laygate School and about 4 private tuition.
Technical Education: Marine Engineering Course, Technical College of Sunderland, Winer sessions 1905-7.
Apprenticeship: 7 years, 1900-1908, Sir Jas. Laing and Sons, Ltd., for seven years: in engineering shops and drawing office as marine engineer.
Subsequent Career: 1 year 8 months, Sep. 1907 to present time: Engineering Lecturer for North Eastern Railway and Wallsend Education Commission.
The employment of Northumbrian Shipping Co. as 3rd Engineer from 1st Feb. 1909.
Total: 8 years and 8 months