Indira Gandhi, daughter of Jawaharlal Nehru, became prime minister of India in 1966. Mrs. Gandhi was born on November 19, 1917 to Jawaharlal and Kamala Nehru.  She was named Indira Priyadarshini Nehru. She fell in love and decided to marry Feroze Khan, a family friend. Feroze Khan’s father, Nawab Khan, was a Muslim, and mother was a Persian Muslim.  Jawaharlal Nehru did not approve of the inter-caste marriage for political reasons (see http://www.asiasource.org/ society/indiragandhi.cfm).  If Indira Nehru were to marry a Muslim she would loose the possibility of becoming the heir to the future Nehru dynasty.  At this juncture, according to one story, Mahatma Gandhi intervened and adopted Feroze Khan, gave him his last name (family name/caste name) and got the name of Feroz Khan changed to Feroz Gandhi by an affidavit in England. Thus, Feroze Khan became Feroze Gandhi.  Though Mahatma belonged to Bania/Gandhi caste (a business tribe) the proposal was acceptable to Nehru for political reasons. Indira Nehru married Feroze (Khan) Gandhi in 1942 and became Indira Gandhi, which helped her politically as daughter of Nehru (the first Prime Minister of the Indian Union) and daughter–in-law of Gandhi (the father of the nation) securing her place in the future Nehru-Gandhi dynasty (based on swordoftruth.com).    Another story, according to Mr. Arvind Lavakare in a personal communication to me, is that Feroz had a Parsi father whose surname was "GHANDI" not "GANDHI". That was made clear by an advertisement in a major English newspaper of Allahabad. It was Mahatma Gandhi who suggested to Nehru that Feroze's surname be spelt as "GANDHI" instead of the original "GHANDI". An RSS columnist wrote that "Ghandi's" mother was a Muslim, and since an offspring takes on the religion of its mother, Feroz ought to be considered a Muslim.  

Indira Gandhi ruled the country from 1966 to 1984, except for a short period from 1977 to 1980. 

Rajiv (Khan) Gandhi was born to Indira (Khan) Gandhi and Feroze (Khan) Gandhi. He converted to Christianity to marry Catholic Italian Sonia Miano (according to swordoftruth.com). He became prime minister in 1984 after Indira was assassinated by her own bodyguards.  He ruled the country for 5 years from 1984 to 1989.  The Nehru- (Khan)-Gandhi dynasty ended as Sonia, declined to accept the power, after Rajiv was assassinated in 1991. (The non-charismatic non-leaders of Congress (I) party handed over the reins of the party to reluctant Sonia, who now leads the Congress party and soon will lead the Indian Union).

The Nehru-Khan-Gandhi dynasty and the veneration and worship of Catholic Italian Sonia Miano (Khan) Gandhi by the Congress party as well as Indian (both Hindus and Muslims) masses throughout India can be considered as great examples of Indian secularism.

The Nehru-Khan-Gandhi dynasty, revived by Sonia Gandhi, swept back to power with vengeance in 2004 elections after a brief vacation of about 15 years.  Sonia Gandhi, who was born in Italy and married into the dynasty, begged her husband to stay out of politics and was drawn into it herself only when the party was in dire need of leadership.  A new generation of Gandhis arrives to save ailing party from disaster at the polls.   Sonia Gandhi (55) inducted her son Rahul (34) and daghter Priyanka (33) into politics and they actively participated and won in the recent elections.   A calcified, out-of-touch, visionless and nepotistic dynasty is poised once again to lead and the dynasty rule continues in the world's largest democracy, albeit with fresh and young Indo-Italian genes having Brahmin-Christian-Muslim-Parsi blood with charming faces and charisma which no other Indian can claim.   Sonia Gandhi's rise from a small-town in postwar Italy to modern India is a story of love, death and dynasty, culminating in the most sensational victory of an Italian middle class woman ever to become the kingmaker in the Indian Union of a billion people. She will run the country from behind scenes as she installs Manmohan Singh as the Prime Minister of the Indian Union, to avert a brewing foreigner-crisis and save the country.