The property of Clayslapp appears in Roy's Military Map of 1747-1755 [3] to the south of what is now known as the Mansfield Road.  A century later r eferences to the pendicle of Clayslaps , Clayslaps Meadow and fields on Clayslaps (six in total) appear in the Valuation Rolls of 1856-57 [4] in the extensive lands of Mansfield owned by Sir Charles Stuart-Menteith. The pendicle (i.e. small farm associated with a larger farmer) is associated with Mansfield Mains which lies south of the Mansfield Road. In the By 1899-1900, the pendicle of Clayslaps is tied to Bowes Cottage [4], to the west of Mansfield Mains.   

The pendicle does not appear on the Ordnance Survey Map of 1857 [3] but a clay-pit is shown in the field at the back of Hall of Mansfield farm, which lies to the north of the Mansfield Road. A ruin is also shown nearby at the confluence of the Hall Burn and the Mansfield Burn, and indeed appears to traverse the Hall Burn. although this is on the wrong side of the Mansfield Road, it be the ruins of Clayslaps, it may be associated with workings at the clay-pit, from which surelt Clayslap derived its name.

Realtively recently new farm sheds at Hall of Mansfield have been built on the site of the ruin, although farmer William Crawford does not recall encountering any traces of ruins when the sheds were being erected. He could however point out nearby undulations in the field which fit exactly with the site of the clay-pit. Most of the pit is now grassed over but with thick-yellowish deposits of clay were exposed here and there.

The name Clayslap is also found in the parish of Riccarton, Ayrshire and in Old Luce, Wigtonshire and there was Clayslap Mill on the banks of the River Kelvin in Glasgow. The term slap may be related to a process for 'slapping water' into the clay, or 'slapping excess water' out of the clay. Since Clayslap at, Mansfield was extant in the mid 18th century, it is possible that clay was worked here for the manufacture of clay-biggins, where the clay was mixed with wood to form the walls of dwellings.

There are no records of brick or tile making in the vicinity, and the  lime kilns at the top of the field are those erected by the Stuart-Menteith's, much later  in the 19th century. Nevertheless, this it would no surprise if this progressive landowner did manufacture drainage tiles somewhere on his estate.