Mcwilliam Family of Scotland

looking for members of the mcwilliam/macwilliam family of Girthon,Kirkcudbrightshire,Scotland
John Mcwilliams & Mary Davitts
Family' James, Mary,John, Sarah,Agnes,HARRIET,Patricia,margaret mcwilliam/macwilliam
mary McWilliam married Walter Campbell
agnes married a Alan Gardner Brown
Harriet married William Wright
any information be appreciated very much