You state that you have some Bairds that came from Scotland and had children born in Pennsylvania around 1880. I am currently researching Samuel Baird, wife Jeannie (or Genie as it appears in 1880 Census) -maiden name Blane who were married in Scotland 1877. It appears they had a son Robert, born 1879 in Scotland and then came to Pennsylvania, USA. They show up in 1880 census in Long Valley (Barclay), Bradford Co, PA. I believe they had at least two other children, William Baird born about 1880 (later relocated to South Africa, possibly via Scotland) and Elizabeth Pollock Baird born about 1889. Elizabeth Pollock Baird was my great-aunt. Any of these names or locations match any of your research?