Reverend KJ Grant1 in his works, “ My Missionary Memories”, states-

The followers of Mohammad were not ashamed to declare their faith or offer their prayers wherever they may be .Vividly before my mind is a picture of a company of twelve to fifteen men, who met together for prayers…the scene was most impressive and could be witnessed every Friday wherever there was a Mohammadan group...... a devout Muslim of considerable wealth and living not far from us sent his son to be educated as a mullah or priest. He returned after a period of five to six years bearing the title of “Hafiz” which is given to one who committed to memory the whole Koran in its original Arabic.

Investigations reveal that this youth, and certainly the first local Hafiz referred to by Rev. Grant, was Yacoob Ali, the father of the late Haji Shaffikul Rahaman (former president general of ASJA) (Extracted from paper "An overview of Muslim Educational Institutions in Trinidad by Farouk Khan")

1. Reverend K. J. Grant was one of the clerics, who in the tradition of the Presbyterian Canadian Mission, came to Trinidad in the 1870s to minister to the Indentured Indians

According to Azam Rahaman, Hafiz Yacoob Ali's grandson, Hafiz Yacoob donated the land to build the Jama Masjid in San Fernando (pictured below).  His son Mohammed Shafik Rahaman became the President General of ASJA Trinidad, succeeding Haji Ruknudeen Sahib.