v.l. Siṅgālaka Thera.– He was a householder of Sāvatthi and had a son called Siṅgālaka. Later he entered the Order, and the Buddha asked him to meditate on the idea of a skeleton. He lived in the Bhesakalāvana in Suṃsumāragiri, and there a woodland sprite once encouraged him with a verse (Thag.vs.18). Thus, urged to strive, he developed insight and became an Arahant.
Ninety-