Beyoncé’s son, born in 2017 alongside her daughter Rumi, is named Sir.
Beyoncé and Jay-Z announced the birth of their twins, Rumi and Sir, in July 2017. The twins joined the couple’s older daughter, Blue Ivy, who was born in 2012. Beyoncé later shared a photograph introducing the twins publicly on Instagram, accompanied by a caption identifying their birth date and names.
The names are often discussed together because Rumi and Sir are twins, but they are separate answers: Rumi is the daughter, while Sir is the son. The children’s names have also appeared in the family’s artistic work and public credits, including projects connected to their parents.
Beyoncé’s pregnancy with the twins was announced during the 2017 Grammy Awards season. Her performance at the 59th Grammy Awards took place while she was pregnant and became one of the ceremony’s most discussed performances.