This was standing in the late 12th century and it is likely to have been built then as a chapel dependent on Calne. Described as a chapel between 1194 and 1316, it was probably built by the lord of the manor. This church was originally dedicated to St. Nicholas and by 1361 was served by a rector. The western end of the chancel and part of a tympanum, now in the western gable wall of the nave, probably date from the late 12th century. In the 13th century the chancel was extended eastwards and a lancet window and a piscina date from this time. In the 14th century the chancel was re-roofed and the nave rebuilt, to be both a little longer and wider than the chancel. A new east window was also inserted in the chancel. In the latter half of the 16th century, after the Reformation, additions were made on the northern side of the nave. This area had a late 17th or early 18th century barrel vaulted ceiling and was reserved for the owners of Blackland House up until 1858. A ceiling was also put in the chancel and nave. Also in the 18th century a west gallery was built in the nave.
By 1806 a porch had been built and the timber framed bell turret rebuilt. The dedication was to St. Peter by 1848. By 1858 a vestry had been built and the porch moved. In the 1860s there was an average congregation of 65-70 at the one Sunday service. The rectory was united with that of Calstone Wellington in 1881 and in 1889 the 18th century ceiling of the chancel was removed. The church avoided Victorian restoration and was sympathetically restored by C.E. Ponting in 1907. He replaced the roof slates with stone tiles, hung the bell tower with stone tiles, reseated the nave and chancel, inserted a chancel screen and refronted the gallery. He also put in new furnishings, including a pulpit and removed the 18th century nave ceiling. In 1962 Blackland was united to Calne vicarage and is served from there. Although there is only one bell, dated 1671, there were two in 1553. The parish registers from 1757 (marriages), 1761 (births) and 1769 (burials), other than those in current use, are held in the Wiltshire and Swindon History Centre.