Beyoncé and Jay-Z are one of the world's most famous power couples. And they now have an equally famous family, with daughter Blue Ivy, 13, and seven-year-old twins, Rumi and Sir. But Beyoncé's mother,

Beyonce’s mom, Tina Knowles, recalls the start of her daughter’s relationship with Jay-Z in her memoir, 'Matriarch'

Tina Knowles reveals in her memoir how Beyoncé's relationship with Jay-Z started as a friendship with tough choices.