What does Emma mean?
Emma comes from the Germanic ermen, meaning “whole” or “universal.” It has been used in England since the Norman Conquest.
What does Gertrude mean?
From Germanic 'ger' (spear) and 'thrud' (strength), so 'strong spear'. The 'spear' element is a weapon of war rather than 'warrior' outright, but the martial sense is well established.