William Leith augmented and enlarged the choir of the Blessed Virgin Mary in length towards the south by the space of 16 feet; and there he founded the altar of SS Laurence and Ninian, which he adorned with Mass book, breviary, and priestly vestments; and there he lies buried. The same William left in his will 40 li to the fabric of the church.

Willelmus leith augmentauit et ampliauit chorum beate virginis marie in longitudine versus austrum per spacium Sexdecim pedum et Ibi fundauit altare beatorum laurencij et Ninianj quod ornauit cum libro missali breuiario et vestimentis sacerdotalibus et Ibidem Sepultus est cuius anime propicietur christus Amen Idem Wallelmus legauit fabricie ecclesie Sancti nicholaij xl lib in testamento suo