Án-boren

According to the Old English Dictionary:

án-boren

part. Only-born, only-begotten; unigenitus :-- Ðæt in Bethléme cyning ánboren cenned wǽre that in Bethlehem the only-begotten king was born, Elen. Kmbl. 783; El. 392: Exon. 16 b; Th. 39, 6. an-boren