Maybe connected?
Derry Sentinel, 22 June 1839: At her father's residence, by the Rev. William McHinch, on the 11th inst., Mr. Alexander Morrison, Derryork, to Margaret, youngest daughter of Mr. Henry Hazlett, Drumneecy.
Derry Sentinel, 15 Jan.1848: On the 4th inst., by the Rev. Joseph Gibson, in the Presbyterian Church of Scrigan, Mr. Robert Morrison, of Derryork, to Sarah, only daughter of Mr. James Morrison, of Owenbeg.
Derry Sentinel, 29 Nov.1850: On the 22nd inst., by the Rev. George Steen, A.M., of Newtownlimavady, Mr. Matthew Morrison, of Derryork, to Miss Mary McLaughlin, of Claggan.
Derry Sentinel, 29 Mar.1864: March 17, in the Bovevagh Presbyterian Church, by the Rev. Thomas Davison, A.M., Dungiven, Arthur Smith, Esq., Grove House, Leeds, to Mary, eldest daughter of Mr. Alexander Morrison, Derryork.