In addition to memorial windows and fixtures described elsewhere in this article, St. Bridget's has some unique commemorative markers.

Local tradition has it that several men of the parish, killed at the nearby Battle of St. Fagan's in 1648 (during the Civil War), lie buried beneath the chancel floor.  A memorial tablet of Penarth alabaster, on the south wall, is surmounted by a coat of arms with four quarterings, each containing a lion rampant.  The tablet commemorates Captain William Jones (d. 1648) and his sons William (d. 1648) and Robert (d.1650).  It is not known whether there is any connection between these men and the battle.

On the south side of the west doorway is a memorial tablet set into the west wall of the tower.  This is now unreadable but is said to be in memory of a four-year-old boy named William Gyles.  An extract from Cardiff Records Vol. II of 1764 reads, "Inquest taken at the village of St. Brides sup. Ely, in the county of Glamorgan, on the body of William Gyles, an infant, found that the deceased having thrown down a hive of bees, the said bees fastened upon him and stung him in his head and neck, which occasioned strong convulsive fits, by which he died."