https://en.wikipedia.org/wiki/Charles_Napier_(Royal_Navy_officer)
https://en.wikipedia.org/wiki/Thomas_Napier_(British_Army_officer)
Thomas Erskine Napier married Margaret Falconer in Edinburgh on 18 December 1821.
Margaret Falconar, other surname Napier, died in Duddingston in 1885, aged 93.
In the 1881 census she was living in Duddingston Cottage
Margaret NAPIER W 88 F Fala, Haddington, Scotland
Rel: Head
Occ: Widow Of Sir T Napier R C B
Georgina MC KAY U 70 F Edinburgh City, Edinburgh, Scotland
Rel: Sister
Occ: Annuitant
Alexina OGILVIE U 50 F Edinburgh City, Edinburgh, Scotland
Rel: Niece
Occ: Annuitant
Plus one visitor and several servants.
Margaret Falconor, daughter of Alexander Falconor and Matilda Clark, was baptised in Fala and Soutra on 18 February 1794.
This couple also had George Hume or Home Falconer, baptised in Edinburgh in 1791, and Alexander, baptised in Fala and Soutra in 1795.
George Home Falconer served in the Scots Greys.
See
https://archive.org/stream/falaandsoutrain00huntgoog/falaandsoutrain00huntgoog_djvu.txt - you need to scroll down to No 63 and 64.
Alexina Falconer, daughter of Alexander Falconer, married William Ogilvie in Edinburgh in 1818.
Alexander Falconer married Matilda Clerk in Lanark in 1790. He apparently died in 1795.