DoD from gravestone in Ballylintagh Presbyterian (ofttimes Seceder) Church:
"Erected in memory of Robert Anderson, 3rd son of John Boyd, who died at the Isle, 31st May 1895, Aged 24 years. Also the above named John Boyd, who died at Collins 8th April 1904, Aged 73 years. Also Margaret, widow of the said John Boyd, who died at Coleraine, 17th March 1928, Aged 86 years."
I searched the Calendars of Wills in the Probate Office in Derry from 1900 to 1910 inc and did not find any entry for this man.