Cahandira Choodeswarar Temple situated on hill top at 250ft high constructed by the Hoysala dynasty king, ThirupuvanamallaBarvatharajaAnthiyazhvar during 1218 AD to 1296 AD. The temple was modernized by Azhakiya Perumal Aathimoolam who also belonged to Hoysala Dynasty. It was Hoysala King Ramanatha (Rama Nayakkan) who had his control center at Veppanapalli, constructed the lake 'RamanayakkanEari' for the purpose of storing water for irrigation and till today the lake is called by his name. Ramanatha was the king who extended Hosur and small marketplace were setup next to the present day's Gandhi Statue area.
Later than Ramanathan, his son Vishwanathan took the throne but he was overthrown by his cousin Palla-raayan III. Pallaraaya III set up his kingdom up to Kerala's Cannanoor. The rule of Hoysala dynasty came to a conclusion after Pallaraaya III died during the war with MaaravarmanSundarapandyan of Madurai's Pandian dynasty. Pallaraaya's son married the sister of King Harihara, who created Vijayanagar kingdom.
Later in the 13th and earlier 14th century AD Hosur was under the rule of Kolar. From the scriptures on the rock it signifies that the king was called as 'AzahgiyaPerumaalAththi-mallanKaaruvaan-arachan' and the Bagalur landlords were under his control. He created the villages Aththi-palli, Aththi-mugam, Aththi-chandiram and Aththi-naththam and all the names relate to his name and even at present it is called by his name. From Pandians, Hosur was under the rule of Vijayanagar and then went into the power of Hyder Ali and later, Hosur came under the rule of Tippu Sultan and a mosque was built by Sultan in Hosur to be found in region of Ram Nagar.