Margrethe II of Denmark, born 1940 and christened Margrethe Alexandrine Þórhildur Ingrid, is a member of the Danish royal family who reigned as Queen of Denmark from 14 January 1972 until her abdication on 14 January 2024. Having reigned for exactly 52 years, she was the second-longest reigning Danish monarch after Christian IV. She is also the world’s most recent female reigning monarch. On her accession, she became the first female monarch of Denmark since Margrethe I, ruler of the Scandinavian countries in 1375-1412
Margrethe was born into the House of Glücksburg, a cadet branch of the House of Oldenburg, during the reign of her paternal grandfather, King Christian X. She is the eldest child of King Frederik IX and Queen Ingrid. She became heir presumptive to her father in 1953, when a constitutional amendment allowed women to inherit the throne. From Wikipedia and from the book “We are all equal”, by Finn Nygaard. Author Elsebeth Aasted Schanz, PhD, Manager and curator of the Danish Poster Museum.