He served as an appointed member of the House of Representatives.
Born in Kandy, Jonklaas qualified as a Proctor and Notary Public from the Ceylon Law College and started his practice in Kandy.
He married May Theresa Clementi-Smith on 3 June 1929, they had one daughter.
[1] He was appointed to the House of Representatives by the Governor-General in 1960 and again in 1965, serving until 1970.
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