Vellacci or Vellachi Nachiyar was the second queen of Sivaganga estate in 1790-1793.
 She is the daughter of Muthu Vaduganatha Periyavudaya Thevar and Velu Nachiyar.
 She was made the heir to the throne of Sivagangai by her mother Velu Nachiyar after the recapture of Sivagangai from the British.
The Indian Rebellion of 1857 was a major, but ultimately unsuccessful, uprising in India in 1857–58 against the rule of the British East India Company, which functioned as a sovereign power on behalf of the British Crown.
 The rebellion began on 10 May 1857 in the form of a mutiny of sepoys of the Company's army in the garrison town of Meerut, 40 miles northeast of Delhi (now Old Delhi).
 It then erupted into other mutinies and civilian rebellions chiefly in the upper Gangetic plain and central India, though incidents of revolt also occurred farther north and east.
 The rebellion posed a considerable threat to British power in that region, and was contained only with the rebels' defeat in Gwalior on 20 June 1858.
 On 1 November 1858, the British granted amnesty to all rebels not involved in murder, though they did not declare the hostilities formally to have ended until 8 July 1859.
 The rebellion is known by many names, including the Sepoy Mutiny, the Indian Mutiny, the Great Rebellion, the Revolt of 1857, the Indian Insurrection, and India's First War of Independence.
Rani Velu Nachiyar (1730-1796), was a queen of Sivaganga estate in 1760-1790.
 She was the first queen to fight against the British colonial power in India, even long before the famous Rani of Jhansi.
 She is celebrated by Tamilians as "Veeramangai" (brave women).
Jhalkaribai (22 November 1830 – 1858) (Hindi: झलकारीबाई ] ) was a Dalit woman soldier who played an important role in the Indian Rebellion of 1857.
 She served in the women's army of Queen Laxmibai of Jhansi.
 Born into a Kori family, she eventually rose to a position of a prominent advisor to the queen, Rani of Jhansi herself.
 At the height of the battle of fort of Jhansi, she disguised herself as the Queen and fought on her behalf, on the front, allowing the Queen to escape safely out of the fort.
Laxmi Bai Nagar is a residential government colony in New Delhi, India.
 Laxmi Bai, meaning "city of Lakshmibai", is named for the Rani (queen) of the Maratha-ruled Jhansi State in India, which is now a province of modern Uttar Pradesh state.
 She fought for independence from the British Raj during the Indian Rebellion of 1857 and died in combat.
Sivaganga Palace is a palace in Sivaganga district, Tamil Nadu, southern India, about 40 km from Madurai.
 It is an old royal palace, with many historical connections.
 The palace was used as residence by queens Velu Nachiyar (1780–90), Vellacci Nachiyar (1790–93) and Rani Kaathama Nachiar (1864–77).
 No remains of the original Sivaganga Palace exist, but a new palace, known as "Gowri Vilasam", was built by Padamathur Gowry Vallabha Thevar (1801-1829) in the year 19th century.
 A heritage site of Chettinad, it was the property of Rani Velu Nachiar.
The Royal Regiment of Indian Artillery, generally known as the Royal Indian Artillery (RIA), was an administrative corps of the British Indian Army.
 The East India Company raised the first regular company of Artillery in 1748, with a small percentage of Indian Gunners called Gun Lashkars, Tindals and Serangs.A few Indian Mountain Batteries, officered by the British, were raised in the 19th century and formed part of the Royal Artillery.
 Royal Indian Artillery (RIA) of British India Army, was raised on September 28, 1827, as a part of the Bombay Army, a presidency army of the Bombay Presidency.
 It was later renamed as 5 Bombay Mountain Battery, and involved in First Anglo-Afghan War (1839–1842).
 The Indian Rebellion of 1857 was sparked off in Meerut on 10 May 1857, primarily by native artillery of Bengal Army, following which all Indian artillery units were banned except mountain artillery batteries, though for his service during the Indian Rebellion, Major Richard Keatinge of Bombay Artillery, was awarded the Victoria Cross in 1858.
Lakshmibai, the Rani of Jhansi (   ; 19 November 1828 – 18 June 1858), was the queen of the princely state of Jhansi in North India currently present in Jhansi district in Uttar Pradesh, India.
 She was one of the leading figures of the Indian Rebellion of 1857 and became a symbol of resistance to the British Raj for Indian nationalists.
The Rani Mahal is a royal palace in the city of Jhansi, Uttar Pradesh, India.
 The palace was built by Raghu Nath-II of the Newalkar family (1769-96).
 This palace later formed one of the residences for Rani Lakshmibai.
 Architecturally, it is a flat-roofed, two-storeyed building having a quadrangular courtyard with a small well and one fountain on opposing sides.
 The palace consists of six halls and parallel corridors with multi-foiled arches and a number of small rooms.
 The Darbar Hall, approached by a flight of steps, is beautifully decorated with paintings in bright colours exhibiting various floral, faunal and geometrical motifs.
 The arches are embellished with peacock and rosette patterns.
 The major part of it was damaged by British bombardment during the Indian Rebellion of 1857.
 The ground floor of the palace houses stone sculptures collected from Madanpur, Barua Sagar, Dudhai and Chandpur dating from the Gupta to Medieval periods (9th to 12th centuries).
Natore Rajbari (also known as Pagla Raja's Palace, Natore Palace) was a prominent royal palace in Natore, Bangladesh.
 It was the residence and seat of the Rajshahi Raj family of zamindars.
 Famous queen Rani Bhabani lived here and after the death of her husband, expanded both the estate and the palace.

Question: Rani Velu Nachiyar was a famous queen before which queen that was a leading figure of the Indian Rebellion of 1857?
Answer: Rani of Jhansi