 A year later, the estate was forfeited to the Standard Life Assurance Company and the long association of the Herbert family with Muckross House was ended.After the auction of the property in November 1899 had failed, it was bought a week later by Arthur Guinness, 1st Baron Ardilaun.At that time Henry Arthur Herbert suffered from Parkinson's disease and was living in the home of his doctor in Watford (Hertfordshire), where he died in August 1901.