According to The Royal Forums:
Queen Sirikit of Thailand, née Mom Rajawongse Sirikit Kitiyakara, celebrates her 80th birthday today, 12 August.
The Queen was born as the oldest daughter and third child of Prince Nakkhatra Mangkala Kitiyakara, Prince of Chanthaburi, and Mom Luang Bua Sanidvongs. Her siblings are the late Mom Rajawongse Galyanakit Kitiyakara, Mom Rajawongse Adulyakit Kitiyakara and Mom Rajawongse Busba Kitiyakara.
On 28 April 1950, the Queen married King Bhumibol Adulyadej of Thailand. The King and Queen have 3 daughters, Princesses Ubol Ratana, Maha Chakri Sirindhorn and Chulabhorn Walailak, and 1 son, Crown Prince Maha Vajiralongkorn.