Carolingian liturgist
d. c. 837
Helisachar was a churchman and statesman in the Carolingian Empire. He served as the chancellor of Aquitaine from 808 to 814 and archchancellor of the empire from 814 until 819. He remained an influential figure at court into the 830s and was entrusted with military responsibilities in 824 and 827. He was rewarded with multiple abbacies and composed an antiphonary.