Question: Name the husband of Louise Mountbatten (previously Princess Louise of Battenberg) for whom the Teaterladan or barn theatre in Sweden was jointly restored?

Context articles: Mountbatten family
Princess Louise (sidewheeler)
Princess Louise of Denmark (1875–1906)
Arthur Collins (courtier)
Hedemora Gamla Theater
Battenberg family
Louise Mountbatten
The Round Barn Theatre
Lord Leopold Mountbatten
Battenberg (Eder)

The Mountbatten family is a European dynasty originating as a branch of the German princely Battenberg family.
 The name was adopted during World War I by family members residing in the United Kingdom due to rising anti-German sentiment amongst the British public.
 The name is an Anglicisation of the German Battenberg, a small town in Hesse.
 The title of count of Battenberg, later prince of Battenberg, was granted to a morganatic branch of the House of Hesse-Darmstadt, itself a cadet branch of the House of Hesse, in the mid 19th century.
Princess Louise was a sidewheel steamboat built in 1869.
 From 1869 to 1879 this ship was named "Olympia".
 In 1879 the name was changed to "Princess Louise", after Princess Louise, Duchess of Argyll, a daughter of Queen Victoria who was married to Marquess of Lorne (1845-1914), Governor General of Canada from 1878 to 1883.
 "Princess Louise" was the last sidewheeler to be operated commercially on the coast of British Columbia.
Princess Louise of Denmark ("Louise Caroline Josephine Sophie Thyra Olga") (17 February 1875 – 4 April 1906) was a Danish princess, the third child and oldest daughter of Frederick VIII of Denmark and his wife, Princess Louise of Sweden and Norway.
Arthur Collins CB, MVO, Commander, Hohenzollern Order (26 June 1845 – 21 November 1911), was Equerry and Comptroller for Princess Louise, Queen Victoria's 4th daughter and Gentleman Usher in the households of Queen Victoria and King Edward VII.
 He attended Princess Louise in her role as the wife of John Campbell, 9th Duke of Argyll (at that time Marquis of Lorne), who was Governor General and Vice Regent of Canada between 1878 and 1883.
 Collins represented Princess Louise at the funerals of Lord Beaconsfield, Benjamin Disraeli, and William Ewart Gladstone, the two competing Prime Ministers during Queen Victoria's reign.
 Collins attended as a Gentleman Usher the coronation of King Edward VII and probably Victoria's funeral.
Teaterladan (The barn theatre), officially Hedemora Gamla Theater (old Swedish spelling of "Old Theatre of Hedemora"), is a theatre and a listed building in Hedemora, Dalarna County, Sweden.
 It was built somewhere between 1826 and 1829 as a combined barn and theatre in three floors, with the stage and dressing rooms at the top and the storage area at the two lower floors.
 The first performance at the stage was a play performed by A. P. Bergmans Sällskap on February 1, 1829.
 From 1888 to 1910 the building was rented by the Salvation Army.
 When they moved, the building was left unused until 1946, when Hedemora celebrated 500 years as a stad.
 It was restored, and dedicated by the Crown Prince Couple Gustaf Adolf and Louise on June 20, 1946.
The Battenberg family was formally a morganatic branch of the House of Hesse-Darmstadt, rulers of the Grand Duchy of Hesse in Germany.
 The first member was Julia Hauke, whose brother-in-law Grand Duke Louis III of Hesse created her "Countess of Battenberg" with the style "Illustrious Highness" (H. Ill.H.) in 1851, at her morganatic marriage to Grand Duke Louis' brother Prince Alexander of Hesse and by Rhine, and elevated her title to "Princess of Battenberg" with the style "Serene Highness" (HSH) in 1858.
 The name "Battenberg" was last used by her youngest son, Prince Francis Joseph of Battenberg, who died childless in 1924.
 Most members of the family, residing in the United Kingdom, had renounced their German titles in 1917, due to rising anti-German sentiment among the British public during World War I, and changed their name to "Mountbatten", an anglicised version of Battenberg.
 The name Battenberg refers to the town Battenberg, Hesse.
Louise Alexandra Marie Irene Mountbatten (previously Princess Louise of Battenberg; 13 July 1889 – 7 March 1965) was Queen of Sweden from the accession of her husband, Gustaf VI Adolf, in 1950 until her death.
The Round Barn Theatre is a non-Equity regional theatre located in Nappanee, Indiana.
 It is part of Amish Acres, a historic farm and heritage resort.
 Amish Acres is owned by founders Richard and Susan Pletcher.
 Jennifer Wysong serves as president.
 The Pletchers are the producers of The Round Barn Theatre.
 The building is a round barn built in 1911 that was dismantled and relocated at the farm in 1998.
 It was moved 12 mi from its original location.
 To meet state building codes a thirty-two ton six-inch (152 mm) tubular steel frame was erected and the original studs, compression rings, rafters, and cupola were reassembled attached to the frame.
 The barn is sixty feet in diameter and stands sixty feet tall to the top of the cupola.
 Insulation is sandwiched between new barn siding inside and outside the frame.
 A post and beam straw shed that was added to the structure shortly after its construction was also moved intact to become the proscenium stage for the theatre.
 Robert Holdeman, AIA, of Traverse City, Michigan designed the plans that converted the barn into a state of the art performing arts center.
 Ninety-six dimmer circuits provide theatre lighting and a sound system using Audiotechnica cordless microphones provide the required tools for the lighting and sound designers.
 The stage is outfitted with a counterweight fly system.
 The orchestra is housed in a loft open to the audience.
 The seating capacity in the orchestra, mezzanine, and balcony is four hundred.
Lord Leopold Mountbatten, GCVO (Leopold Arthur Louis; 21 May 1889 – 23 April 1922) was a British Army officer and a descendant of the Hessian princely Battenberg family and the British Royal Family.
 A grandson of Queen Victoria, he was known as Prince Leopold of Battenberg from his birth until 1917, when the British Royal Family relinquished their German titles during World War I, and the Battenberg family changed their name to Mountbatten.
Battenberg (Eder) is a small town in the Waldeck-Frankenberg state of Hesse, Germany.
 The town is noted for giving its name to the Battenberg family, a morganatic branch of the ruling House of Hesse-Darmstadt, and through it, the name Mountbatten used by members of the British royal family, a literal translation of Battenberg.