The free peasants promised to pay him dues , only to mock about him , once he and his soldiers had left .
In 1187 and 1188 Hartwig and his ally Maurice I , Count of Oldenburg heading their troops invaded Ditmarsh .
The free peasants promised to pay Hartwig dues , only to mock about Hartwig , once Hartwig and Hartwig 's soldiers had left .
In 1187 and 1188 Hartwig and his ally Maurice I , Count of Oldenburg heading their troops invaded Ditmarsh .