In the churchbook of Anloo I did not find a Jelke or a Berend, son of Jelke. A marriage is listed between Harm Hindriks Lanting and Sijbrigje Jelkes on 6-5-1798. Sijbrigje is possibly a sister of Berend Jelkes. Sijbrigje is listed as being of Annerveensche Compagnie. Checking of the lidmatenregister might give a clue where Berend Jelkes came from. The name is not typical for Drenthe.
Annegien, daughter of Berend Jelkes and Grietien Freriks is bapt. on 16-12-1798, so as usual, the date listed in the death certificate is wrong. This daughter was baptized in DE Kiel, but the baptism was recorded in Anloo. Born Annerveensche Compagnie.