This sign on the village green, is very modern in design, in stark contrast to the picturesque old church across the road.

Note the spelling, which differs from that shown on the OS map. Road signs in the area show one or the other of the alternate spellings: St Ippolyts or St Ippollits.

St. Ippolyts: A Country Parish in the Nineteenth Century
Yeomen of Ippolyts: A Country Parish Before 1800

St Ippolyts Church
St Ippolyts Parish Council
St Ippolyts on Herts Genealogy
St Ippolyts: Wikipedia

St Ippolyts OS Grid Ref: TL 198 271