R. Subbiah, J.

This Writ Appeal is filed by the writ petitioners challenging the order dated 10.08.2016 passed by the learned Single Judge in dismissing W.P.No.27477 of 2016 filed by the appellants/writ petitioners praying to quash G.O.Ms.No.1573, Public (Tourism 1) Department, dated 27.07.1979, as published in the Tamil Nadu Government Gazette Extraordinary, Part-II, Section 2, dated 30.07.1979 in respect of the writ petitioners' lands, comprised in S.No.99/3A at No.162, Mamallapuram Village, Chengalpattu District (now Kancheepuram District), measuring an extent of 55 cents, and consequently declare all the subsequent proceedings including the sale of the said lands in the name of the seventh respondent as null and void and direct the respondents to restore the possession of the said lands to the appellants/writ petitioners.

2. The case of the appellants/writ petitioners before the learned Single Judge, inter-alia, is as follows:

(a) In the Writ Petition, the third writ petitioner/third appellant has sworn the affidavit on behalf of all the other writ petitioners, stating that the writ petitioners are the legal heirs of Late A. Thiruvengada Mudaliar. Their grandfather Late