Burke's Landed Gentry 1952 gives the family as
Tyrwhitt-Drake of Shardeloes, so still in their possession then. William Thomas Perceval T-D is stated as
heir to Shardeloes (to his uncle, Capt Thomas T-D MC born 1893
Head of the Family).
Not sure why Capt Francis John T-D not given as heir? He is given as resident at Pantons, Dallington, Heathfield, Sussex.