John Jacob Mammala (Joy), a successful entrepreneur and Government contractor, was born as the fifth of six children on the day of the Piravom Church Chakkuli feast, according to Amma (officially recorded as April 18th, 1964). He moved to Mumbai after completing studies in his hometown and returned five years later to start his career in Kerala as a Government Contractor. He eventually ventured into entrepreneurship and is currently running successful businesses in various parts of Kerala. John is an active member in the community and is currently serving as the President of YMCA, Maneed. He is happily married to Siji Jacob, daughter of Mr. Abraham Chako and Mrs. Mariyakutty Chako. She is a home maker and a passionate Gardener. Being the youngest son of the family, John and Siji were fortunate to live with and take great care of parents Yacob and Sara until their demise in the year of 2023. They are blessed with two children, Dona John Mammala and Jacob John Mammala.

Dona is a psychologist and human resources professional, currently settled in Vancouver, Canada with her husband, Geevarghese Kalarikkal Boban, who works in marketing and is also an instructor at a reputed college.

Jacob, after completing his Masters in International Business Management in the UK, is now taking care of the family business playing an active role in its expansion.

John Jacob and Siji.