Remaindership

His grace made a surrender to the crown, in 1706, of the titles conferred upon his father, and obtained a new grant of those honors, dated 17th of June, 1706, extending the remaindership to his heirs male or female, descended from William, first Earl of Queensberry, leaving the marquesate and earldom of Queensberry, with the viscounty of Drumlanrig, and barony of Douglas, of Hawick and Tibbers, untouched, and to descend according to the original patents of creation.

Source: wiktionary

His brother, who succeeded him, in default of male issue, had been previously created Baron Howard, of Castle-Rising, Earl of Norwich, and Earl-Marshal of England, with remaindership to numerous branches of his family, and dying, in 1684, he was succeeded by his son Henry, who was a staunch Protestant.

Source: wiktionary

Sir William married Catherine, eldest daughter of Arthur Viscount Ranelagh, and was succeeded by his only surviving son, Sir Richard, 3rd baronet, who was elevated to the peerage 2nd July, 1681, as Baron Oxmantown and Viscount Rosse, with remaindership to the male issues of his great grandfather.

Source: wiktionary

And they may sell the wardship of the lands, and the maritages of the heirs, if they are not married, but they cannot alienate any part of the inheritance or they may offend as regards a remaindership.

Source: wiktionary