Faber was the eldest son of Charles Wilson Faber, of Northaw, a Deputy Lieutenant of Hertfordshire and Mary Beckett, daughter of Sir Edmund Beckett, 4th Baronet, and thus sister of the 1st Baron Grimthorpe.
On 19 April 1923 Lumsden married Alice Mary Roddick in Northaw.
Its most famous resident is former cabinet minister Cecil Parkinson.
Faber was the youngest son of Charles Wilson Faber, of Northaw, a Deputy Lieutenant of Hertfordshire and Mary Beckett, daughter of Sir Edmund Beckett, 4th Baronet, and thus sister of the 1st Baron Grimthorpe.
Cuffley Brook is one of the longest brook tributaries of the Lea, forming from Grimes Brook north west of Cuffley, Northaw Brook south-west of Cuffley, snaking for several miles through the south-east Hertfordshire hills past Crews Hill until it reaches a confluence with Turkey Brook, in the London Borough of Enfield, near Forty Hall.
In the village, on the corner of Huggins Lane and Parsonage Lane, is a stone plinth marking a point close to which in 1784 (at 3.30pm on 15 September) the Italian balloonist Vincenzo Lunardi, while on the first hydrogen filled balloon flight in England, is reputed to have made his first landing, although there is reason to believe that the site was probably nearer Northaw.