What are the odds of having children of the same gender?

In 1970’s Ireland, families with six or more children were the norm. CSO figures almost five decades later however, sees numbers for such families drop from 15,000 to a mere 3,000. Having four children in 21st century Ireland is considered a large family but to have more, and for those children to be all of the same gender, is a rarity and an attraction in itself.
Myths about how to conceive a girl or boy child have been around for centuries. During the reign of King Henry VIII it was widely believed the responsibility to produce the desired male gender fell to the female. Science has since proven otherwise.