Gertrude

According to scholars, the meanings of Old German two-part names should not be interpreted only as a sum of the meanings of their parts.

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https://library.oapen.org/bitstream/handle/20.500.12657/32120/617174.pdf?sequence=1&isAllowed=y

"þruþ/þryþ" strength is merely the OE from of the word (OE y representing /y/, the i-umlaut of u), not the ancient Germanic, which would be closer to "truuitho". The word is an adjectival substantive based on the root of "true" in the earliest sense of "firm, solid, strong", just as "truth" is a later formation from "true" in the derived senses "faithful, honest, reliable). The OE form þruþ is anomalous, perhaps influenced in sense and form by þrym "crowd, host, multitude, force", but corresponds well with High German drude "witch", and Romance forms drudo/druda "sweetheart", where the semantic development seems to be "covenant>marriage>spouse>sweetheart>hussy>(euphemistically?)witch", but sparse documentation of the vernacular on the continent prior the the 13th C makes reliable connection difficult.

My grandma's name was "Gertrud", without the "e" at the end. She once told me it means as much as "the one who carries a spear".

In the USSR this name could also mean "Hero Of Labour" from the Russian words geroy meaning "hero" and trud meaning "labour".