The engagement was announced 23 July, 2022, between Christopher D. Williams, son of Dr David Williams and the late Dr Julie Friend, of Newcastle, New South Wales, Australia,
& Jennie Alexandra Cameron Graham [born 14 July, 1993], scion of the Dukes of Montrose, third daughter of Lord Donald Alasdair Graham [ born 28 Oct, 1956], and his wife the former Bride Donalda Elspeth Cameron [born 15 Oct, 1956], scion of the Camerons of Lochiel.
Jennie Graham is a granddaughter of the late 7th Duke of Montrose [1907-1992].
Sources:
https://peeragenews.blogspot.com/2022/07/williamsgraham-engagement.html
https://www.angelfire.com/realm/gotha/gotha/montrose.html
Descendants of Grand Duke Karl of Baden
The engagement was announced 29 July, 2022, between Tristram St John R. Coates [born 1994], younger son of Nicholas John Coates, of Northington House, Overton, and his wife the former Virginia Anne Julia Frances de Stacpoole [born 28 January, 1963], scion of that Irish landed gentry family who hold a Papal dukedom,
& [Portia Ruth] Isobel Stanley [born 19 April, 1995], scion of the Earls of Derby, only daughter of the Hon Peter Hugh Charles Stanley, DL [born 4 March, 1964], of New England Stud, Newmarket, & his wife the former Hon Frances Caroline Burke Roche, DL [born 31 March, 1965], daughter of the late 5th Baron Fermoy [1939-1984].
In Aug 2021 Tristram's elder brother, Jolyon [b 21 May, 1992], announced his engagement to Isabel Rose [Wizz] Douglas-Hamilton [born 1991], a granddaughter paternally of the 14th Duke of Hamilton [1903-73].
The bride-to-be is a second cousin of the Dukes of Cambridge and Sussex. Her grandfather, the late Lord Fermoy, was a brother of the Hon Mrs Frances Shand Kydd [1936-2004], mother of Diana, Princess of Wales [1961-97].