Natalia N. answered 04/16/19
Biological Sciences BS, Master in Ecology here to help!
Hi! This is a very particular question, as I am more used to people comparing Portuguese to other languages, not German. Well, answering to your question... Portuguese language comes from the Romance Languages branch, which means it is a language that came from Vulgar/Common Latin. In the past, before the Roman rule over Iberia, the region was comprised by Celtic or Pre-Celtic cultures, but no language heritage persists from them. Then came the Roman rule, and later Germanic invasions, from different germanic groups with different dialects, and later the Islamic (Moors) invasions, finishing with the reconquest into a Roman Catholic based culture. It is known in modern Portuguese some words of Arabic origin to persist, like alface (lettuce), but it is not known any Germanic heritage to the language.