Boeles and Van Giffen
Two self-made archaeologists can be considered the founders of modern terp archaeology.
The first is Pieter C.J.A. Boeles, curator of the Frisian Museum during the first half of the 20th century. He created an impressive collection of finds from terps and published important books on the habitation history of Friesland.
The second is Albert Egges van Giffen, who from 1908 onwards investigated many terps, the most famous of which is Ezinge. He was director of the Biological-Archaeological Institute of the University of Groningen (now Groningen Institute of Archaeology).