the Malabar Coast and Tamil Nadu. The southernmost region of present-day Malabar coast (the coastal belt between Kanyakumari and Kollam) was under the Ay dynasty, who were related to, and officially feudatories of the Cheras. The Ay Dynasty (later known as the Venad Dynasty and finally the Thiruvithamkur Dynasty), followed by the Nannan Dynasty (later known as the Mushika dynasty and finally the Kolathiri dynasty), were the two oldest and most important lineages of the Velir clan, who had very frequent intermarriages with the Cheras, Cholas, and the Pandyas. Present-day Thiruvananthapuram city, district, and Kanyakumari district, were ruled by the Ay dynasty during ancient and medieval ages, which was a Tamil kingdom based in the southernmost part of Indian Subcontinent. Ay kingdom had experienced attacks and conquests by Cholas and Pandyas in various periods. Later it became a part of Venad in late middle ages, which was eventually expanded as the powerful kingdom of Travancore in 18th century CE. The Tamil-Dravidian kind of architecture is also found in Padmanabhaswamy temple, which makes it distinct from the architectural style of temples in Kerala in general. In 1684, during the regency of Umayamma Rani, the English East India Company acquired a sandy spit of land at Anchuthengu, near Varkala on the sea coast about north of Thiruvananthapuram city, with a view to erecting a factory and fortifying it. The location had earlier been frequented by the Dutch, then by the British. It was from here that the English gradually extended their diplomacy to other parts of Travancore. Modern history begins with Marthanda Varma (1729 CE–1758 CE), generally regarded as the Father of modern Travancore. In the early 18th century CE, the Travancore royal family adopted some members from the royal family of Kolathunadu (a long separated younger sister dynasty of Ay/Venad/Thiruvithamkur with whom they had the tradition of mutual adoption of heirs for centuries) based in Kannur. Thiruvananthapuram was known as a great center of intellectual and artistic activity at this time. Travancore became the most dominant state in Kerala by defeating the powerful Zamorin of Kozhikode in the battle of Purakkad in 1755. The temple of Vishnu reclining on Anantha, the Sri Padmanabhaswamy temple, is the most recognizable and iconic landmark of the city and the district and dates back to the 16th century. In addition to the presiding deity of Padmanabha, this temple contains several shrines, dedicated to Lord Krishna,