The first pastor was the Rev. John McLeod, Philadelphia District Secretary of the Board of Foreign Missions. He had recently taken up residence on a nearby farm and gave the site for the church building from his land, laying out the intersecting streets as well. Rev. McLeod became the first minister, serving as “stated supply” until 1864.

When the first church building was dedicated, the village numbered only about ten houses. The rise of the railroad and the consequent influx of new residents led to surprising growth by 1890. Now a larger church was needed and a grander church was a possibility. The pastor, the Rev. Thomas Jefferson Aiken, as a young man had earlier served the church and now returned to lead this project.

The cornerstone for the new church, dedicated in 1892, was laid precisely thirty years after the cornerstone was placed for the first church. Today we gather to worship in this same building with a sense of pride. The Presbyterian Historical Society has recognized its historic uniqueness by including it in the American Presbyterian Historic Sites Register.

Under Rev. Aiken, the church sponsored a mission Sabbath School in Paoli whose numbers grew to become the present Paoli Presbyterian Church in 1899. Long pastorates were in vogue during the early years of the twentieth century. The Rev. Dr. J. Charles Levengood preached at Trinity from 1912 to 1940.

Following World War II, the church removed its cemetery from the corner of Berwyn and Waterloo avenues into the Great Valley Presbyterian churchyard. On the Berwyn site, the Rev. John H. Scott presided over building of a large hall, separate classrooms, a church kitchen, and a pastor’s study, all completed in 1954.

Two decades of suburban growth and development culminated in the erection of a new two-story Christian education wing dedicated in 1973, during the pastorate of the Rev. Dr. Robert W. Bohl. The facility provided space for broadened and enriched church educational programs, the weekday nursery school, and evening use by church and community groups.

A memorable opportunity to serve was presented in 1975 when Trinity sheltered 83 refugees, many of them orphans, fleeing the collapse of South Vietnam. For over two weeks they were housed, fed, clothed, and provided medical care while arrangements were made to match community resources with human needs. Freedoms Foundation honored Trinity and selected Rev. Bohl to receive its Humanitarian Activities Award. Subsequently, two smaller groups of Vietnamese refugees were settled and cared for in Berwyn by the church.