The Lion flag which was used by the last King of Sri Lanka.

Wariyapola Sri Sumangala was a Buddhist monk who lived in the early 19th century in Sri Lanka (then known as Sinhale). He was an Anunayaka of the Asigiriya Chapter. Sri Sumangala is known for taking down the Union Jack and re-hoisting the Sinhalese lion flag, before the convention that handed over control of the island to the British in 1815.