The book was presented to my great great grandmother Ellen Cavenagh-Mainwaring (nee Mainwaring 1845 - 1920) by her future son-in-law William Edward Blackwood Magee (1886 - 1981). William Magee married Alice Cavenagh-Mainwaring (1879 - 1952) on 14 August 1913 at St Simons, Southsea.
Family Notices. (1913, September 25). The Register (Adelaide, SA : 1901 - 1929), p. 5. Retrieved December 17, 2013, from http://nla.gov.au/nla.news-article59108350
William Edward Blackwood Magee born in Simla in 1886, joined the Royal Navy age 15.A few months after Christmas 1910, in the 1911 census (2 April 1911) he was aged 25, a Lieutenant (military) on board His Majesty's vessel T.B. 025 - he was first on the list of 8 men - there were also on board a gunner (military), petty officer 1st class, leading seaman, able seaman and three stokers 1st class. This was a Torpedo Boat 1st class and a tender to HMS Vernon.
Wikipedia tells me http://en.wikipedia.org/wiki/HMS_Vernon_%28shore_establishment%29 that HMS Vernon was a shore establishment or 'stone frigate' of the Royal Navy at Portsmouth, two and a half miles from Southsea where the Cavenagh-Mainwaring family lived. Vernon was established in 1876 as the Royal Navy's Torpedo Branch and operated until 1 April 1996. I like the term "stone frigate".
I don't know if TB 25 was this boat http://www.dreadnoughtproject.org/tfs/index.php/125_Footer_Class_Torpedo_Boat_%281885%29#T.B._25 "The ship featured a fixed torpedo tube in a "bull-nose" bow equipped with a ram. This shape was glaringly unsuccessful and she had to be altered to a straight bow which caused her to lose her tube". Perhaps having lost her tube that is why she was a tender.
The book had only just been published but there seems to have been no production of The Ring that December in London based on reviews in The Times. Mere speculation of course but perhaps Mrs Cavenagh-Mainwaring went to this concert:
"Music." Times [London, England] 12 Dec. 1910: 12. The Times Digital Archive. Web. 7 Nov. 2013.
William and Alice Magee had two children, Richard and Jean - Jean appears to have never married and died in 1996. I do not know anything about Richard.
William Magee died in 1981 in Hampshire. Alice died in 1952.