Singh is actually the Indian Sanskrit root word for Lion and is common in south Indian language of Kannada, Tamil and Malayalam which has Simha, Singham and Sim

Singh is actually the Indian Sanskrit root word for Lion and is common in south Indian language of Kannada, Tamil and Malayalam which has Simha, Singham and Simham as the word for lion respectively. The Sri Lanka's ethnic majority are called Sinhalese which again is derived from the Indo-Aryan Sinhala language bearing similar influence, meaning the "lion people" or "people with lion blood", while a sword-wielding lion is the central figure on the modern national flag of Sri Lanka.The island nation of Singapore (Singapura) derives its name from the Malay words singa (lion) and pura (city), which in turn is from the Tamil-Sanskrit சிங்க singa सिंह siṃha and पुर புர pura.