During the Ancient Regime, the Saint Adrian Abbey in Geraardsbergen held the patronage of the Saint John's Church (Sint-Janskerk)
in Hemelveerdegem (now part of the Town of Lierde, Belgium). The construction of the choir dates back to 1390-1410.
The transept was added around 1550-60 or shortly after the 16th century iconoclastic fury.
Source: Koenraad DE WOLF,
Architectuurgids Zuid-Oost-Vlaanderen. Gotische bouwkunst (1225-1625), 1997, pp. 53-54.
(English translation: Architectural Guide of South-East-Flanders. Gothic Architecture (1225-1625).)