ADJECTIVES comparative, -er, moreAdjectives comparative. The inflection er instead of more is found before "than."
The comparative "more wonderful" seems to be used, as in Latin, for "more wonderful than usual," if the following line is to be attributed to Cicero as in the editions:
“Sir, your company is fairer than honest.
In Hamlet iv. 7. 49, "my sudden and more strange return," means "sudden, and even more strange than sudden."
“Why, saw you anything more wonderful?