In Scotland Mary, Ellen, and Blanche would be termed "heirs portioners," and Mary, being an heiress and the eldest born in the direct and senior line, would be termed the "heir of line." David being possessed of an ancient Scottish peerage not limited to males (the Earldom of Edinburgh), Mary, the heir of line, would at once succeed in her own right as Countess of Edinburgh on the death of her grandfather Charles. If the family were an untitled Scottish family entitled to supporters, these would descend to Mary unless they had been specifically granted with some other limitation.
At the death of Thomas in 1830 Edmond becomes heir male apparent, and at the death of his father in 1840 Edmond becomes heir male of his house until his death. David having been created a peer (Duke of London) with remainder to the heirs male of his body, Edmond succeeded as Duke of London at the death of Charles in 1840. Grace and Muriel are coheirs of Edmond after his death. They are not either coheirs or heirs-general of Charles, in spite of the fact that their father was his heir male. At the death of Charles in 1840, when Edmond succeeded as heir male, John succeeded as heir male presumptive to Edmond. He was not heir-apparent, because a son might at any moment have been born to Edmond. An heir-apparent and an heir-presumptive cannot exist at the same time, for whilst there is an heir-apparent there cannot be an heir-presumptive. John succeeded as heir male of his house, and therefore as Duke of London, in 1850, at the death of his elder brother Edmond; but, though John was the "heir male" of his said elder brother, he was not his "heir" (Grace and Muriel being the coheirs of Edmond), nor was he the "heir male of the body" of Edmond, not being descended from him. John, however, was "heir male of the body" of Charles. George is heir-apparent of John until his death in 1870, when George succeeds as "heir" of his father and heir male of his house, and consequently Duke of London. At his death in 1880 Dorothy becomes the "sole heir," or, more properly, the "sole heir-general," of her father George; but his kinsman Robert becomes his "heir male," and therefore Duke of London, in spite of the fact that there was a much nearer male relative, viz. a nephew, Arthur, the son of his sister. Robert also becomes the heir male of the body of Owen and heir male of his house, and as such Duke of London. He would also be generally described as the heir male of the body of David.
At the death of Dorothy in 1885 her coheirs were her aunt Alice and her cousin Arthur equally, and though these really were the coheirs
