Where does “Rasmussen” come from?

Rasmussen (Danish) comes from Danish Rasmus, from Latin erasmus, from Koine Greek Ἔρασμος, from Ancient Greek ἐράσμιος, from Ancient Greek -ιος, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “Rasmussen”, step by step

Step	Language	Word	Meaning
1	Danish	Rasmus	—
2	Latin	erasmus	—
3	Koine Greek	Ἔρασμος	—
4	Ancient Greek	ἐράσμιος	lovely, pleasant; beloved, desired
5	Ancient Greek	-ιος	Suffix added to nouns or adjectives, forming...
6	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ιος →Every word from Ancient Greek ἐράσμιος →