célestine ann beyincé (born january 4, 1954), known as tina knowles-lawson, is an american businesswoman and fashion designer. she is known for her house of deréon and miss tina by tina knowles fashion brands. she is the mother of singers beyoncé and solange knowles. until 2011, she was married to mathew knowles, the manager of destiny's child as well as beyoncé.