3 adverbs to describe how to vouched

I have given them as they were repeated to me, but I can personally vouch for the following fact.

Of the witnesses, Messrs. T.D.M. and F.C. Macy, Mr. Pierce says, "They are both inhabitants of this island, and have resided at the south; they are both worthy men, for whose integrity and intelligence I can vouch unqualifiedly; the former has furnished me with the following statement.

I think I may safely vouch for the truth and honesty of the reverend gentleman's admission.

3 adverbs to describe how to  vouched  - Adverbs for  vouched