Guru Nanak Dev (1469' 1538), founder of Sikhism, was born to Kalu Mehta and Mata Tripta, wherein the Bedi Khatri clan of a Hindu family in the village of Talwandi, now called Nankana Sahib, near Lahore. His father, a Hindu named Mehta Kalu, was a Patwari, an accountant of land revenue in the government. Nanak's mother was Mata Tripta, and he had one older sister, Bibi Nanki. From an early age Guru Nanak seemed to have acquired a questioning and enquiring mind and refused as a child to wear the ritualistic “sacred” thread called a Janeu and instead said that he would wear the true name of God in his heart as protection, as the thread which could be broken, be soiled, burnt or lost could not offer any security at all. From early childhood, Bibi Nanki saw in her brother the Light of God but she did not reveal this secret to anyone. She is known as the first disciple of Guru Nanak. Even as a boy, Nanak was fascinated by religion, and his desire to explore the mysteries of life eventually led him to leave home. It was during this period that Nanak was said to have met Kabir (1440-1518), a saint revered by many. Nanak married Sulakhni, daughter of Moolchand Chona, a trader from Batala, and they had two sons, Sri Chand and Lakshmi Das. His brother-in-law, Jai Ram, the husband of his sister Nanki, obtained a job for him in Sultanpur as the manager of the government granary. One morning, when he was twenty-eight, Guru Nanak Dev went as usual down to the river to bathe and meditate. It was said that he was gone for three days. When he reappeared, it is said he was "filled with the spirit of God". His first words after his re-emergence were: "there is no Hindu, there is no Muslim". With this secular principle he began his missionary work. He made four distinct major journeys, in the four different directions, which are called Udasis, spanning many thousands of kilometres, preaching the message of God. Guru Nanak spent the final years of his life in Kartarpur where Langar (free blessed food) was available. The food would be partaken of by Hindus, rich, poor, high or/and so called low castes. Guru Nanak worked in the fields and earned his livelihood. After appointing Bhai Lehna as the new Sikh Guru, on 22 September 1539, aged 70, Guru Nanak met with his demise.
 Guru Angad
Guru Angad Dev
Main article: Guru Angad Dev
In 1538, Guru Nanak chose Lehna, his disciple, as a successor to the Guruship rather than one of his sons. Bhai Lehna was named Guru Angad and became the successor of Guru Nanak. Bhai Lehna was born in the village of Harike in Ferozepur district in Punjab, on March 31, 1504. He was the son of a small trader named Pheru. His mother's name was Mata Ramo (also known as Mata Sabhirai, Mansa Devi, Daya Kaur). Baba Narayan Das Trehan was his grand father, whose ancestral house was at Matte-di-Sarai near Mukatsar. Under the influence of his mother, Bhai Lehna began to worship Durga (A Hindu Goddess). He used to lead a group of Hindu worshippers to Jawalamukhi Temple every year. He married Mata Khivi in January 1520 and had two sons, (Dasu and Datu), and two daughters (Amro and Anokhi). The whole Pheru family had to leave their ancestral village because of the ransacking by the Mughal and Baloch military who had come with Emperor Babar. After this the family settled at the village of Khadur Sahib by the River Beas, near Tarn Taran Sahib, a small town about 25 km. from Amritsar City. One day, Bhai Lehna heard the recitation of a hymn of Guru Nanak from Bhai Jodha (a Sikh of Guru Nanak Sahib) who was in Khadur Sahib. He was thrilled and decided to proceed to Kartarpur to have an audience (darshan) with Guru Nanak. So while on the annual pilgrimage to Jwalamukhi Temple, Bhai Lehna left his journey to visit Kartarpur and see Baba Nanak. His very first meeting with Guru Nanak completely transformed him. He renounced the worship of the Hindu Goddess, dedicated himself to the service...