Born on August 3, 1928, Lang Dulay was a T'boli princess from the Lake Sebu region in South Cotabato. She first learnt weaving at the age of 12 from her mother, Luan Senig.

She is known for maintaining the use of traditional motifs in T'nalak weaving amidst commercialization of the craft which saw the introduction of more modern designs by non-T'bolis. She notably had a mental repertoire of around 100 patterns and designs: some of these were based on her dreams, hence her description as a "dreamweaver".

At the age of 12 her first work of art came in the form of a dream, having received the first pattern of her design from the god, Fu Dalu. Her dream didn’t stop from her designs. When she was recognized with  Gawad sa Manlilikha ng Bayan Award, she dreamed more for the T’boli tribe (especially for her grandchildren) and established a weaving center – Manlilikha ng Bayan Center – for the women to continue on with the art of T’nalak weaving.

Lang Dulay set up the Manlilikha ng Bayan Center workshop in her hometown to promote the traditional art of T'nalak weaving and by 2014, five of her grandchildren had become weavers.

Lang Dulay fell into a coma in early 2015 and died on April 30 of the same year.

According to www.hapipaks.com and wikipedia