How many children did the parents of Robert Burns have?

Robert Burns had a total of twelve children by four women, including nine by his wife Jean Armour.

Seven of his children were considered illegitimate, including the first four by Jean Armour before they were married in 1788, although under Scottish law they were considered legitimate after their parent's marriage.

Of Jean's children, six died young and another, William Nicol Burns, had no children. Robert Burns also had an illegitimate son Robert Burns by Janet "Jennie" Clow. He was born in Edinburgh in 1788 and later became a merchant in London.
He had eleven children.

• Elizabeth ~ Born 1785 to Elizabeth Paton.
• Robert & Jean ~ Born September 1786 to Jean Armour.
• Twin Girls ~ Born March 3, 1788 to Jean Armour. They died March 10 & March 22, 1788.
• Son ~ Born November, 1788 to Jenny Clow.
• Elizabeth ~ Born March 31, 1791 to Anne Park.
• William Nicol ~ Born April 9, 1791 to Jean Armour Burns.
• Elizabeth RidDELL ~ Born November 21, 1792 to Maria RidDELL.
• James Glencairn ~ Born August 12, 1794 to Jean Armour Burns.
• Maxwell ~ Born July 25, 1796 to Jean Armour Burns. Born the day Rabbie was buried.

*Robert Burns fathered 13 children. Two girls and one boy were by other women than his wife, Jean Armour Burns. She took Anna Park's child, Elizabeth Parks Burns in to raise as her own.