Ge-mildsiend

According to the Old English Dictionary:

-miltsiend, es;

ge-mildsiend

m. A pitier; mĭsĕrātor :-- Ðú Driht God gemildsiend tu Dŏmĭne Deus mĭsĕrātor, Ps. Spl. 85, 14. Ðú góda cyngc and earmra gemiltsigend thou good king and pitier of the poor, Th. Apol. 18, 11. ge-mildsiend