Gást-sunu

According to the Old English Dictionary:

gǽst-sunu;

gást-sunu

gen. a; dat. a, u; acc. u; pl. nom. acc. a, o, u; gen. a, ena; dat. um; m. A spiritual son, Christ; spīrĭtālis fīlius, Christus :-- Ahangen wæs on Caluarie Godes gástsunu the spiritual Son of God was hanged up on Calvary, Elen. Kmbl. 1342; El. 673. gast-sunu