Raffles Lighthouse is a lighthouse located on Pulau Satumu in the Singapore Strait, about 14 kilometres south of the main island of Singapore. The Raffles Lighthouse was first mooted in 1833, but the foundation stone was only laid in 1854 when William John Butterworth was the Governor of the Straits Settlements from 1843 to 1855. The stoneā¦Raffles Lighthouse is a lighthouse located on Pulau Satumu in the Singapore Strait, about 14 kilometres south of the main island of Singapore. The Raffles Lighthouse was first mooted in 1833, but the foundation stone was only laid in 1854 when William John Butterworth was the Governor of the Straits Settlements from 1843 to 1855. The stones on which Raffles Lighthouse stands come from the granite quarries on Pulau Ubin. The lighthouse was named after Sir Stamford Raffles, who founded modern Singapore in 1819.