Where does “Dresdem” come from?

Dresdem (Portuguese) comes from German Dresden, from Middle High German Dresden, from Lower Sorbian drezga — forest.

Ancestry of “Dresdem”, step by step

Step	Language	Word	Meaning
1	German	Dresden	Dresden
2	Middle High German	Dresden	—
3	Lower Sorbian	drezga	forest

Dresdem — Etymology, Origin & Word History | Etymology Explorer