A man fathered three children with his daughter
, the High Court in Glasgow has heard.
The 71-year-old, who cannot be named for legal reasons, admitted having incestuous sex with his daughter over a 13-year period from 1985 to 1998.
The offences were committed at a house in the Highlands.
Judge Lord Woolman deferred sentence until later this month and placed the man on the sex offenders register. He was remanded in custody.
Prosecutor Andrew Miller told the court that the daughter, who is 46, moved back in with her father in 1985 after her marriage collapsed.
Mr Miller said: "She gave birth to three children by him.
"The sexual relationship was at the instigation of her father. She had concerns, but was unable to raise them.
The court was told that the man first began having sex with his daughter two years after his wife died.
He told police that it was consensual sex and had just developed over time. He admitted that he was the natural father of the three children who are all under 16.
Judge Woolman said he did not have sufficient information on the effects of the offences on the daughter and the children to proceed to sentence at this stage.