Mr Llwyd of Henllan was at Gopa Fach one Sabbath morning, and in Llangyfelach village for two o’clock, speaking on the Horse Steps, by the upper Tavern House, and the Lord anointed the meeting in a very particular way. That evening at six in Llansamlet there was a most special unction upon the ministry, and as a result a very strong and powerful revival broke out. Scores were added to the Society in Llansamlet, and many of them have continued faithful to the glorious and worthy cause to the end of their days.
Bevan, Ychydig o Hanes, pp. 8-9.
This information was kindly provided by Geraint Jones
I do not know where the meeting was held.