Question: Ashley Hicks' mother is a great niece of what Empress of Russia?

Context articles: Ashley Hicks
Lady Pamela Hicks
Rubellius Plautus
Marvi Mazhar
Janet Meakin Poor
Probert-Price Collection
Princess Xenia Andreevna of Russia
Emperor Hui of Han
Adcote School
Julie Summers

Ashley Louis David Hicks (born 18 July 1963) is a British author, architect, and interior and furniture designer.
 He is the only son of Lady Pamela Hicks (née Mountbatten) and David Nightingale Hicks.
 Hicks designs architecture and interiors in Europe, the United States, and the United Kingdom.
 He divides his time between designing residential interiors and designing his fabric and furniture lines.
Lady Pamela Carmen Louise Hicks ("née" Mountbatten; born 19 April 1929) is a British aristocrat.
 She is the younger daughter of the 1st Earl Mountbatten of Burma by his wife, Edwina Mountbatten.
 Through her father, Lady Pamela is a first cousin of Prince Philip, Duke of Edinburgh and a great niece of the last Empress of Russia, Alexandra Feodorovna.
Gaius Rubellius Plautus (33–62 AD) was a Roman noble and a political rival of Emperor Nero.
 Through his mother Julia, he was a relative of the Julio-Claudian dynasty.
 He was the grandson of Drusus (only son of Tiberius Caesar), and the great-grandson of Tiberius and his brother Drusus.
 Through his great-grandmothers Vipsania Agrippina and Antonia Minor, he was also descended from Marcus Vipsanius Agrippa and Mark Antony but not from Augustus.
 He was descended from Augustus' sister Octavia Minor, herself a great niece of Julius Caesar.
Marvi Mazhar (Sindhi: ماروي مظهر ‎ ) was a member of Pakistan Peoples Party in Sindh Assembly in 2003 to 2008.
 She was elected from PS-74 Dadu-IV in Dadu, Sindh, Pakistan.
 Marvi Mazhar is the daughter of Pir Mazhar Ul Haq the parliamentary leader of Pakistan Peoples Party in Sindh Assembly and present Senior Minister with the Portfolio of Education in the Sindh Cabinet.
 She is the great grand daughter of former Chief Minister of Sindh, Pir Ilahi Bux, and of Qazi Akbar, long serving Sindh Provincial Minister.
 She is the great niece of Dr. Fahmida Mirza, the ex-Speaker of the National Assembly of Pakistan and great grand niece of ex-Federal Minister Qazi Abdul Majeed Abid.
 She was a member of Sindh Assembly's Standing Committee on Education.
Janet Meakin Poor (born November 27, 1929 in Cincinnati, Ohio) is a landscape design specialist based out of Winnetka, Illinois.
 She is the great great niece of the famous American impressionist painter Lewis Henry Meakin.
The Probert-Price Collection is a collection of items from the Probert-Price estate, primarily hundreds of vintage dresses which belonged to Renee Probert-Price, original It girl and well-known London socialite of her time (1917-2013).
 Renee died in 2013 aged 96, and left over 300 dresses, hats, furs, shoes and handbags dating from the 1930s and 1980s to her great niece and goddaughter.
Princess Xenia Andreevna Romanoff (10 March 1919 – 22 October 2000) was a direct descendant of the Tsars of Russia.
 She was a great niece of Nicholas II, the last reigning Russian Emperor.
Emperor Hui of Han (210–188 BC) was the second emperor of the Han Dynasty in China.
 He was the second son of the first Han emperor, Han Gaozu and Empress Dowager Lü.
 He is generally remembered as a weak character dominated by his mother, Empress Dowager Lü, personally kind and generous but unable to escape the impact of her viciousness.
 He tried to protect Ruyi, Prince Yin of Zhao, his younger half-brother, from being murdered by Empress Dowager Lü, but failed.
 After that he indulged himself in drinking and sex and died at a relatively young age.
 Empress Dowager Lü installed two of his sons, Liu Gong and Liu Hong (known collectively as Emperors Shao of Han), the sons of the Emperor's concubine(s) after he died without a designated heir.
 Emperor Hui's wife was Empress Zhang Yan, a niece of his by his sister Princess Yuan of Lu; their marriage was the result of insistence by Empress Dowager Lü and was a childless one.
Adcote School is an independent day and boarding school for girls, located in the village of Little Ness, 5 mi northwest of Shrewsbury, Shropshire, England.
 The school was founded in 1907, and is set in a Grade I listed country house built in 1879 for Rebecca Darby, the widow of Alfred Darby I (1807–52) and a great niece of Abraham Darby.
 The Darbys were the iron-master family who built Ironbridge.
 The school has a Junior School that takes girls aged 5 to 11, and the Senior School for girls aged 11 to 16 and a Sixth Form takes girls from 16–19.
Julie Summers (born 1960) is an English author, historical consultant and writer, best known for the book "Jambusters."
 The book focuses on several women who were members of the Women's Institute during World War II and who were inspiration for the ITV series Home Fires.
 She is the granddaughter of Philip Toosey and the great niece of Sandy Irvine.