The Grumman family were given control of the fiefdom of New Berlin and where the Lord-Governors of that planet during the Terran Empire. House Grumman later renamed the planet Technopolis before it was reverted back by Dahlia Avender-Slade.
Malik Grumman was the first of his family to loose the seat of power on New Berlin, he resigned following an information leak in 2541 and the seat became fully democratically elected.
House Grumman have a long history of being major investors and innovators in the world of business. They started the Terran Neural Digitising corporation and helped organize a merger that created LGD Gamma
Reiner Grumman went on to found Arucia Lobbying group and Gallimimus Solutions