Sir Harry Burrard, 1st Baronet, of Walhampton
Sir Harry Burrard, 1st Baronet( 1707 – 12 April 1791) was a British politician who sat in the House of Commons for 37 years from 1741 to 1778.
Robert W. Levering
Robert Woodrow Levering( October 3, 1914 – August 11, 1989) was a U.S. Representative from Ohio, son-in- law of Usher L. Burdick and brother- in- law of Quentin N. Burdick.
Harry Mallaby-Deeley
Sir Harry Deeley Mallaby-Deeley, 1st Baronet (27 October 1863, London – 4 February 1937, Cannes) was a British Conservative Party politician.
Harry Deeley was educated at Shrewsbury School and Trinity College, Cambridge.
His brother was the theatrical producer Frank Curzon.
He was the founder and first President of Prince’s Golf Club at Mitcham.
With his Cambridge University friend Percy Montagu Lucas he provided most of the capital to create new links at Sandwich, now Prince's Golf Club, Sandwich, the land being donated by the Earl of Guilford.
The course was designed by Charles Hutchings, the 1902 Amateur Champion, and laid out between 1904 and 1906.
In 1913 he purchased the whole of the Duke of Bedford's Covent Garden estate for £2m., having already been involved in the purchase of the Piccadilly Hotel and St. James's Court, Buckingham Gate.
In 1922 he famously acquired control of the large estates of the cash-strapped Duke of Leinster during the latter's lifetime.
Fitzgerald had previously sold Mallaby-Deeley his reversionary rights to the estate for a notional consideration, not expecting, as a younger son, to inherit.
Deeley was elected Member of Parliament for Harrow in 1910 and for Willesden East in 1918, resigning in 1923.
In 1922 he assumed the additional name of Mallaby, his mother's maiden name, by deed poll and was created a baronet (of Micham Court, Surrey).
Charles Francis Norton
Charles Francis Norton( 1807 – 1835) was a 19th- century Member of Parliament for Guildford.
Norton was also a Captain of 52nd Light Infantry; son-in- law of Sir Colin Campbell; brother- in- law of writer Caroline Norton
Frank Curzon
Frank Curzon (17 September 1868 – 2 July 1927) was an English actor who became an important theatre manager, leasing the Royal Strand Theatre, Avenue Theatre, Criterion Theatre, Comedy Theatre, Prince of Wales Theatre and Wyndham's Theatre, among others.
Curzon produced some of the most successful Edwardian musical comedies, including "A Chinese Honeymoon" (1903) and "Miss Hook of Holland" (1907; one of several successes starring his wife, Isabel Jay), and he later produced several plays starring Ivor Novello.
Curzon was involved in a number of legal disputes, the most celebrated of which involved an audience member who refused to remove her hat.
When Curzon prevented her from returning to her seat, she charged him with assault.
Curzon won.
Later in life, Curzon became a very successful racehorse breeder, and in 1927 his horse Call Boy won The Derby.
Sir Harry Jephcott, 1st Baronet
Sir Harry Jephcott, 1st Baronet( 15 January 1891 – 29 May 1978) was a British pharmaceutical industrialist.
Sir Harry Burrard, 1st Baronet, of Lymington
General Sir Harry Burrard, 1st Baronet( 1 June 1755 – 17 October 1813) was a British soldier who fought in the American War of Independence, the French Revolutionary Wars and in the Peninsular War.
Robert Vadra
Robert Vadra is an Indian businessman, entrepreneur and the husband of Priyanka Gandhi.
He is the son -in- law of Sonia Gandhi and Rajiv Gandhi, and the brother- in- law of Rahul Gandhi.
Harry Burrard-Neale
Admiral Sir Harry Burrard- Neale, 2nd Baronet( born Burrard; 16 September 1765 – 7 February 1840) was a British officer of the Royal Navy, and Member of Parliament for Lymington.
He was the son of William Burrard, the governor of Yarmouth Castle on the Isle of Wight, and nephew of Sir Harry Burrard, 1st Baronet, of Walhampton, whom he succeeded in 1791.
In 1795, he adopted the additional name of Neale on his marriage to Grace, daughter of Robert Neale of Shaw House, Wiltshire.
He died without issue in 1840 and was succeeded by his brother George.
Harry Calvert
Lieutenant General Sir Harry Calvert, 1st Baronet( March 1763 – 3 September 1826) was a British general.

Question: Who is Harry Mallaby-Deeley's sibling-in-law?
Answer: Isabel Jay