Upgant Frisian is an extinct Ems [nl] dialect of East Frisian.
[1] It was the dialect spoken around the area of Upgant-Schott.
The only text preserved in the dialect is a wedding poem by Imel Agena.
[2] Below is a comparison of the first five sections of the wedding poem.
Wedding poem, in honor and well-being of the honorable, manly, and noble Eggerick Ulricken, groom, and the honorable and virtuous maiden Tialda Hayunga, bride, northern reeve Ulben Hayunga's only daughter