FATEH KAUR (d. 1773), popularly known as Māī Fatto, was the wife of Bābā Ālā Siṅgh, founder of the Paṭiālā family. She was the eldest daughter of Chaudharī Khānā, a zamīndār of Kāleke, in present-day Saṅgrūr district of the Punjab. It is said that at her birth her parents, disappointed at having a female child, put her in an earthen vessel and buried her alive. A holy man, Dyāl Dās, in the line of Bhāī Bhagatū, happening to pass along and, seeing the mother in tears, enquired the cause of her grief. On Dyāl Dās's advice, the child was dug out from underneath the earth unhurt. As she grew up, she came to be known by the name of Fatto. She was married to Ālā Siṅgh in 1707 and bore him three sons, Sardūl Siṅgh, Bhūmīā Siṅgh and LāI Siṅgh, all of whom died in the lifetime of their father, and a daughter, Pardhān Kaur.

         Fateh Kaur was a devoted housewife. She helped her husband in matters of state as well. It was she who at the time of plunder of Barnālā took the initiative and appointed a deputation to negotiate peace with Ahmad Shāh Durrānī who was on his way to Kābul after the battle of Pānīpat (1761). She was able to secure peace on payment of a tribute. It was also owing to her influence that Bābā Ālā Siṅgh had the support of the descendants of Bhāī Bhagatū, one of the most revered Sikh families of the cis-Sutlej territory. Bhāī Gurbakhsh Siṅgh of this family, who founded the state of Kaithal, helped Bābā Ālā Siṅgh in his conquest of a large number of territories, including Buḍhlāḍhā and Ṭohānā. Fateh Kaur lovingly served the Dal Khālsā and kept an open Gurū kā Laṅgar for them. After the death of Bābā Ālā Siṅgh, Fateh Kaur installed her grandson, Amar Siṅgh, on the throne of Paṭiālā. Himmat Siṅgh, half-brother of Amar Siṅgh, raised a revolt against him, but Fateh Kaur intervened and brought about a compromise between the two.

         Fateh Kaur, who is counted among the builders of Paṭiālā state, died in 1773 at Paṭiālā and was cremated near Bābā Ālā Siṅgh's samādh, in the area known as Shāhī Samādhāṅ, the royal cemetery.