She was the widow of Sir Edward Crofton, 2nd Baronet, of the Mote, who had represented Roscommon in the Irish House of Commons and had been offered a peerage just before his death.
He sat in the House of Lords as an Irish representative peer from 1840 to 1869 and served as a Lord-in-waiting (government whip in the House of Lords) in the three Conservative administrations of the Earl of Derby and in Benjamin Disraeli's first government.
His son, the third Baron, served as an Irish Representative Peer between 1873 and 1912 and was also State Steward to the Lord Lieutenant of Ireland.
As of 2014[update] the titles are held by the latter's great-great-grandson, the eighth Baron, who succeeded his father in 2007.
The current heir presumptive is the present holder's twin brother Charles Marcus George Crofton (born 1988).