Christian X of Denmark
Irene was born on 13 February 1904 in Athens, she had three elder brothers, Alexander (1893) George (1890), and Paul (1901), and one elder sister, Helen (1896). Another sister, Katherine was born in 1913. In 1927, her brother, George, announced her engagement to Prince Christian of Schaumburg-Lippe, a nephew of Christian X of Denmark, but no marriage occurred.