If someone belong to/know about the family of Raja Rangit Singh in England, what is their status now?

Question

Raja Rangit Singh was once ruler of Punjab(now part of Idia/Pakistan), His family made an agreement with Britishers and handed over Punjab to them and sattled in London. I heard they are no more Singh now.
I'm intrested as they have strong influencial role in never ending of Kashmir dispute.
As Kashmiries are the one become reason of their down fall.
May be they are still sponsering the matter to keep on, endlessly, (as revange) as per their agreement with Great Britishers. May be I'm wrong.
Please describe.

Answer 1

After his death, the British took his heir, the young prince Maharaja Duleep Singh and took him to England where he was put under the protection of the Crown and converted to Christianity, before re-converting to Sikhism later in his life.

In 1854, he was then sent into exile in England, his 'poor health' also being cited. While in exile, he would seek to learn more about Sikhism and was eager to return to India, but was thwarted by his handlers. Having finally decided in 1886, in no uncertain terms, to return to India and re-embrace Sikhism, and despite protests from the India Office, he set sail for 'Home'. He was intercepted in Aden, where the writ of the Raj began. He could not be stopped from an informal re-conversion ceremony in Aden (far less grand and symbolic that it would have been in India), but was forced to return to Europe. He headed for Paris, where he would die at the age of 55, not really having seen India again after he was 15, except for two brief, tightly-controlled visits in 1860 (to bring his mother to England) and in 1863 (to scatter his mother's ashes).

More here:
http://en.wikipedia.org/wiki/Maharaja_Duleep_Singh