In the last week I have found so much information about my family. I learned more about several of the siblings of my great-great-grandfather Andrew T. Anderson (born Andreas Troedsson in Grevie, Skåne, Sweden). I found the passenger list which documents the arrival of his sister Elna and her son Sven Peter Nilsson/Nelson. They arrived in Boston, Massachusetts on 2 September 1903, and then went to Chicago, Illinois. I found their brother Sven T. Anderson on Find A Grave, and there is a photo of his tombstone. According to the family history compiled by my grandmother's cousin, their oldest brother Ola Petter Troedsson went to Australia. A few days ago I confirmed that he did settle there; he emigrated from Sweden to Brisbane, Queensland.
I also learned more about the family of my 3rd-great-grandfather John Bennet Winters. He was born in Scotland, and was with his parents and siblings in Leith, Midlothian, Scotland in 1841. By 1859 he was in Tonawanda, Erie, New York, where he married Anna Walker. I did not know if he emigrated alone or with family. I could not find his family in Scotland in 1851. I looked for them in England too, but did not find them. According to the 1841 census, his parents, Hugh Winters and Mary Bennet, were born in Ireland. Last night I found out that they emigrated to the United States and lived in Brooklyn, New York; they were there by 1851, when another child of theirs was baptized.