M-l-n-d-s (Manda)
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Kitab Ghara'ib al-funun wa-mulah al-'uyun (1050) is the only book to mention the place as M-l-n-d-s; which can as well be Malindi.
Al Idrisi (1150) and Yakut (1220) have Mulanda which might be Manda or Malindi. But there is still no archaeological prove Malindi was an import-export harbor at that time. Manda was.
At its peak, the town covered some 40 acres (160,000 m2) and its population is estimated to have been about 3,500. Manda prospered until the 13th century when it began to decline.
The Takwa Ruins on Manda Island in the Lamu area were a town in the period 1500-1700, and it was designated a Kenyan National Monument in 1982.
Taken from: Wikipedia, the free encyclopaedia
The Manda town ruins, were first explored by the archaeologist Neville Chittick in 1965. The town owes its origins to trade with the Persian Gulf during 9th and 10th centuries. The chief trading commodity was probably elephant ivory. Mangrove poles were probably also important. Early inhabitants of Manda constructed buildings with burnt square brick and stone and set with a lime mortar. These building techniques are found only on islands and coastal areas of Kenya. This brick-and-mortar technology is unique to the previously mentioned areas whereas the bricks averaging about 18 cm (which "match perfectly ...in measure") are unique for East Africa for this period, and are likely to have been brought in from Sohar, in modern-day Oman. These bricks probably arrived on Manda Island as ballast in sailing ships entering the port. From the mid-9th century to the early 11th century buildings were also constructed from coral known as coral rag cut from dead coral reefs.
The large-scale excavations in 1966, 1970, and 1978 revealed a prosperity unrivaled in East Africa for the period. Signs of this prosperity include Chinese porcelain dating from the ninth century onward, Islamic pottery and glass, and local pottery dated by the associated imports. Chittick defines 7 periods for occupation of Manda Island: Mid-9th to early 11th century, Mid-11th to late 13th century, late 13th to 14th century, 15th and early 16th century, Mid-16th to 17th century, and post-seventeenth century. A striking feature of the town are large sea walls built sometime between the 9th century to the 13th century. The walls parallel the shore and are built from large coral blocks. These walls were likely constructed to reclaim sections of the shoreline. Running parallel with the sea with returns running inland, these walls built from large coral blocks are deduced to have been constructed partly to reclaim sections of the shore, and partly to consolidate the edges of the peninsula.
In the July 2013 issue of Archaeology, it was reported that a Chinese "Yongle Tongbao" cash coin was found on Manda Island, illustrating the reach of Chinese explorers and traders. The coin was issued during the reign of the Yongle Emperor, Zhu Di which lasted until 1424.