A plaque from the original Saxon church has been re-located to the Lumley Chapel of the church of St Dunstan's, Cheam, Surrey Ed.  This is the earliest record I can find of the family using the coat of arms of George Osborne (Ashford branch) who became Earl of Danby in 1673 and Duke of Leeds in 1694.
Tho. Usborn alias Osborn hujius Eclesiae Rector Ob 1 die Decembris Anno aetatis suae XLV Anno Christi MDCLXXXVI
See also Manning & Bray's History of Surrey 1809 vol.2 p.475