Laut that lived in Singapore. The Orang Kallang (also called the Orang Biduanda Kallang) lived in the swampy areas in the Kallang River. They lived on boats and sustained their lives by fishing and collecting other materials from the forests. After 1819, they were relocated by Temenggong Abdul Rahman to the northern Singapore Straits at Sungai Pulau. In 1847 most of the Orang Kallang were wiped out by a smallpox epidemic. The Orang Seletar lived in the river swamps and the small islands surrounding mainland Singapore. They would often gather in the coastal areas, especially on the estuary of the Seletar River. They lived a nomadic lifestyle until the 1850s when they started living on land and followed the lifestyles of others living in Singapore. The Orang Seletar lived in the harbour waters of Keppel Singapore. They were believed to have traversed the waters of Keppel Harbour since the early 16th century, making them one of the earliest settlers of the island. They sold fish and fruits to the trading vessels that passed the area. The Orang Gelam came from a tribe in Batam Island. They were brought by the Temenggong of Johor together with a group of his followers to establish a settlement in the first decade of the 19th century. Many of the Orang Gelam who lived along the Singapore River served as boatmen for merchant ships while their womenfolk were fruit sellers on boats. The Orang Laut differed from the Malays in that they lived a nomadic lifestyle and lived at sea in their boats whereas the Malays lived in settlements in the villages on the land. One example of an Orang Laut is Mohammed Abdul Rahmah. The Malays Proper (Johor-Riau) When Raffles came to Singapore, there were already hundreds of indigenous Malays and orang laut living there. They were made up of the nobility that was headed by the Temenggong, the palace officials and his followers as well as the Orang Laut. Subsequently, the numbers increased with the arrivals of other Malays from Malaya and the Malay Archipelago. In a matter of several months, hundreds of Malays from Malacca came to Singapore, encouraged by the British who wanted to develop Singapore as a centre for trade and administration (Siebel, 1961:27). When Singapore became more developed and there were better economic opportunities, many Malays from Johore, Riau Islands, Sumatra, Penang and Malacca came to Singapore (Roff, 1967:33;