Ingulf was an Englishman who, having travelled to England on diplomatic business as secretary of William, Duke of Normandy, in 1051, was made Abbot of Crowland in 1087 (Chambers and DNB say 1086) at Duke William's instigation after he had become king of England and the abbacy had fallen vacant.
In the meantime, Ingulf had made a pilgrimage to Jerusalem and entered Fontenelle Abbey at Caudebec-en-Caux in Normandy, where after a time, he was appointed prior.
As his life as Abbot of Crowland progressed, Ingulf suffered the usual events: gout and the work of rebuilding after a destructive fire in the abbey.
However, he was able to obtain an arm of Saint Wulfram; and in 1092 he received the body of Earl Waltheof of Northumbria, an Anglo-Saxon who had been executed per William's orders and who was considered a hero and martyr in popular thought.
The chronicle, which for many years was referred to as 'Ingulf' and is now called the Pseudo-Ingulf, was probably written in order to support claims to property around Crowland, particularly in regard to incursions from Spalding.