Sofia van Loon, Queen consort - Sofia of loons marriage with Heinrich von Schwalenberg

Sources are rare in the 11th century. Perhaps she was a young widow in her twenties when she married Prince Arpåd, which must have been quite an adventure.

Remember that back then people often died at much younger ages due to illness, war and childbirth; that's why so many of the profiles in this era show more than one husband or wife, so it's very likely she was married to both men. Unfortunately I can't help with the references.

Thank you, I hadn`t thought of the possibility that Graf Heinrich von Schwalenberg could have died at a young age and that Sophie - Zsófia van Loon queen consort of Hungary later remarried Géza I of Hungary. It would make sense, because the estimated death of Graf Heinrich von Schwalenberg is 1 year before the estimate of the year in which Sophie - Zsófia van Loon queen consort of Hungary had her first child with Géza I of Hungary. That could mean she became a widow and remarried.