Every eye was sunny with gratulant greetings to every other.    From Wordnik.com.  [A Discourse Occasioned by the Death of Abraham Lincoln] Reference

All gratulant, if rightly understood.    From Wordnik.com.  [THE PRELUDE BOOK FOURTEENTH] Reference

Gather, self-gratulant, the costly store.    From Wordnik.com.  [Original sonnets on various subjects; and odes paraphrased from Horace] Reference