On the ground floor beneath the galleries are three sets of two lights on each of the east and west walls making 12 separate sashes depicting various disciples, evangelists, deacons and martyrs of the early Christian era.

There were two systems of giving these windows to the church, especially during the extensive renovations made to the interior in 1956 and 57, and a campaign to have the windows installed extended over the decade of the fifties. Some donors gave the entire window, chose the subject and had the window installed at their own expense. The others were paid for from a fund supported by numerous donations.

At the south - west corner St. Paul, known as the disciple to the Gentiles, is depicted. The symbol of the horse and sword represents Paul wielding the ‘Sword of the Spirit ‘ which is the message of the Bible itself. This window is in memory of the Rt Rev Jas A Thomson, minister from 1937 to 1951 and Moderator of the General Assembly at the time of his death. The second of this pair of sashes shows the figure of St. James the Great, not to be confused with James the Less or James the Lord's brother. His symbol is often three scallop shells but the artist depicts a sword and staff, a book and a dove, all suggesting the disciple's zeal and missionary spirit. This window is in memory of William McCaw, session Clerk for 56 years up to 1952 when he resigned at the age of 88.