Question: The president of the Rehearsal Club came into royalty because of his marriage to which person?

Context paragraphs:
Rehearsal Club (New York City): The Rehearsal Club was a theatrical girls' boarding house was founded in 1913 by Jean "Daisy" Greer, daughter of New York's Episcopal bishop, and Episcopal Deaconess Jane Harriss Hall.  The residence provided young women pursuing a life in the theater a place to rest between auditions, along with opportunities to socialize and receive simple meals.  Within a year, the Professional Children’s School was established in back parlors of The Rehearsal Club.

Dover F.C.: Dover F.C. was a football club based in Dover, Kent, England.  The club joined the Kent League in 1894, but folded in 1901.  Dover F.C. was revived a year later, this time as a purely amateur club, and rejoined the Kent League, but folded again in 1909.  In 1920, the club reformed, this time as Dover United F.C. and played in local leagues but disbanded for the third time in 1933.  A further incarnation of the club came under the name Dover F.C., began play a year later, and then folded in 1947.

CD Fuengirola: Club Deportivo Fuengirola was a football club based in Fuengirola, Andalusia.  The club came to play 3 seasons in Segunda División B.  Club Deportivo Fuengirola disappears in 1992.

Prince Christian of Schleswig-Holstein: Prince Christian of Schleswig-Holstein (Frederick Christian Charles Augustus; 22 January 1831 – 28 October 1917) was a minor Danish-born German prince who became a member of the British Royal Family through his marriage to Princess Helena of the United Kingdom (25 May 1846 – 9 June 1923), the fifth child and third daughter of Queen Victoria and Prince Albert of Saxe-Coburg-Gotha.

Madras Bulls: The Madras Bulls or MadBulls is an informal motorcycling club based in Chennai, Tamil Nadu, India.  The club was founded in April 2002, with the focus on the Royal Enfield Bullet series of motorcycles.  The club came to being in April, 2002, with a passion towards the Royal Enfield Bullet with the tag line "To Hell with you, To Heaven with Us".

Rehearsal Club (London): The Rehearsal Club was a London club providing support to actresses, ballet dancers and music hall chorus girls.  The club provided a space to rest, read, eat and socialize between morning and evening performances.  It was founded in 1892 by the Rev. John Fenwick Kitto, vicar of St Martin in the Fields, with the support of Prince Christian, who became the club's President.  It seems to have been based at different times at 29 Leicester Square and at Cranbourne Street.

Stirling Senators: Stirling Senators is a State Basketball League (SBL) club based in Perth, Western Australia.  The club fields a team in both the Men's SBL (MSBL) and Women's SBL (WSBL).  The club is a division of the overarching Stirling Senators Basketball Club (SSBC), the major administrative basketball organisation in the City of Stirling.  The SSBC was established in 1971 as Stirling Basketball Association, and in 2012, the Club came under the umbrella of Churches of Christ Sport & Recreation Association (CCSRA).

Alberta Royalty Review: The 2007 Alberta Royalty Review was an independent panel, chaired by William M. Hunter, established by the government of Alberta to review the level of resource royalties collected by the provincial government from petroleum and natural gas companies.  In their final report entitled "Our Fair Share" released on September 18, 2007 the panel concluded that Albertans, who own their natural resources, were not receiving their "fair share" from energy development.  Royalty rates and formulas had "not kept pace with changes in the resource base and world energy markets."  As a result of the review new regulations came into effect under the Alberta Mines and Minerals Act including the Petroleum Royalty Regulation, 2009, and the Natural Gas Royalty Regulation, 2009.  The government of Alberta expected to collect approximately $2 billion annually with new royalty formulas implemented in 2009.  Instead of an increase in royalties on oil and gas, Alberta collected $13.5 billion less from 2009 to 2014 with the new formula.  There was a flaw in the 2009 New Well Royalty Rate formula which was in effect by May 1, 2011, regarding the royalties on gas which had provided almost 67% of total royalties collected by Alberta prior to 2009.  Under the 2009 formula applied to Natural Gas and By-products represented a decrease from the previous fixed rates.  With this formula gas royalties declined by approximately $5 billion per year and provided only 17% of total royalties.  In 2008 the global price of oil plummeted from an all-time high of $145 a barrel on July 8, 2008 to $32 a barrel later in 2008 resulting in "the cancellation of many energy projects" in Alberta.  By 2015 several of these oil projects had not resumed.  In spite of this, Alberta collected $2 billion in oil sands royalties in the post-2009 period with the new rate of 20% compared to $1.5 billion from 2004-2009 with the old rate of 15%.

CD Antequerano: Club Deportivo Antequerano was a football club based in Antequera, Andalusia.  The club came to play 4 seasons in Segunda División B.  Club Deportivo Antequerano disappears in 1992.

Spaced retrieval: Spaced retrieval, also known as expanded retrieval or uniform retrieval, is a learning technique, which requires users to rehearse information to be learned at different and increasing spaced intervals of time or a set uniform amount of time.  In testing this type of learning, people are instructed to rehearse a given set of information at a certain time, and each new rehearsal is expected to have a longer period of time between itself and the previous rehearsal or an equal amount of time between rehearsals.  At the end of every trial period there is a test phase.  Landauer and Bjork first studied this technique of learning in 1978.  The study required participants to learn names from flash cards.  Prior to learning participants were placed into five different rehearsal types: uniform short, uniform moderate, uniform long, expanding, and contracting.  These all indicate the amount and spacing of trials between each test.  Uniform trials involve a number of trials between each test stage, but the trial numbers are fixed (e.g. 2-test-2-test-2-test).  Contracting rehearsals involve larger intervals of time between the first few trials and the test phase, but eventually the trials decrease in number.  Expanding involves starting with trials and tests close together, and as they progress the person would have more time between each trial and test (e.g. 1-test-2-test-3-test).  The effectiveness of the rehearsal types was measured by seeing how accurately participants responded during a test phase.  Expanding was proven to be the most important because it produced the highest amount of recall during the test period.

Supporting paragraphs: Rehearsal Club (London) Prince Christian of Schleswig-Holstein
Answer: Princess Helena