Margareta Lejonhufvud 
Margareta was born in January 1516. She died at the age of 35 on August 26th, 1551.General Notes
SOURCES: LDS Family History Library, anestral file (familysearch.org)
"Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, F.L. J P de Palmas <Aurejac et Tournemire; Frankish line>, Jacquier <Genealogy of Lewis Carroll, Justin Swanstrom, The Royal Families of England Scotland & Wales by Burkes Peerage; Debrett's Peerage & Baronage; Table of descendants French Canadian Genealogical Society; Families of Monfort-sur-Risle & Bertrand de Bricquebec; The Dukes of Normandy, XXXXI, Paul Leportier, Claude Barret>, H.R. Moser <Burke Peerage>, L. Orlandini, O.Guionneau, L.B. de Rouge, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842>, L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron <Brian Tompsett>, R. Dewkinandan, H. de la Villarmois, C. Donadello; Scevole de Livonniere, H. de la Villarmois, I. Flatmoen, P. Ract Madoux <History of Morhange; Leon Maujean; Annuaire de Lorraine, 1926>)... http://geneastar.org.
‌Margareta and Gustav I were married in a religious ceremony on October 1st, 1536 in Stockholm, Sweden. They had two sons and three daughters, named Johann III, Karl IX, Catharina, Cecilia and Elisabet.
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Children
Johann III Vasa
Johann III was born on December 20th, 1537 in Sweden. He died at the age of 54 on November 17th, 1592 in Sweden.
Catharina Vasa
Catharina was born on June 6th, 1539. She died at the age of 71 on December 21st, 1610.
Cecilia Vasa
Cecilia was born on November 16th, 1540. She died at the age of 86 on January 27th, 1627.
Elisabet Vasa
Elisabet was born on April 4th, 1549. She died at the age of 48 on November 12th, 1597.
Karl IX Vasa
Karl IX was born on October 4th, 1550 in Stockholm, Sweden. He died at the age of 61 on October 30th, 1611 in Nykoping, Sweden.