Macung

According to the Old English Dictionary:

e;

macung

f. Making, doing, action :-- Þurh ðes macunge mǽst se eorl Rotbert ðises geáres ðis land mid unfriþe gesóhte it was mostly his doing that Earl Robert attacked this country in the course of this year, Chr. 1101; Erl. 238, 1. macung