Verses with the word underwritten in the Apocrypha (2 verses):
1 Maccabees 12:7
There were letters sent in times past unto Onias the high priest from Darius, who reigned then among you, to signify that ye are our brethren, as the copy here underwritten doth specify.
2 Maccabees 9:18
But for all this his pains would not cease: for the just judgment of God was come upon him: therefore despairing of his health, he wrote unto the Jews the letter underwritten, containing the form of a supplication, after this manner: