I am still terribly confused (as always). Who then were the parents of the Indridi Indridason that was the second husband of Sigurlaug Johannesdottir b 1831 (first was Holmkell Josefsson). They emigrated 1874 from Hóll with four children. Or is this the same person that married Gudrun?
Am I reading your data correct, that Gudrun Olafsdottir also had a child (Hartmann) with Asgrimur Gunnlaugson?
Also, some notes, Vilhelmina Bjorg Arnadottir, wife of Magnus Magnusson Halldorson, was born 27 Dec 1874 (I think) in Eidar Parish, Sudur Mulasysla, died 17 Jul 1963 at hospital in Grafton, North Dakota. Her husband Magnus died in 1958 but I do not as yet have exact date (was not in obituary). Her father Arni died 12 Jul 1936 and mother Matthildur died 9 Dec 1939. Just as a matter of interest, Arni and Mathildur’s great grandson and his namesake Arni Duane Johnson has the land on which one of the few remaining remnants of the “Icelandic railroad” can be found, where it crossed the Tongue River.