The one I did two weeks ago:

DE FIEV SÖHNS
(Trad)

Ik hebb se nich up de Scholen gebrocht,
ik hebb nich eenmaal over se gelacht,
se gahnt nich spelen up de Straten.
Ik hebb se up de wilde See gesandt,      
ehren levesten Vader to söken.

Dat eene, dat starv den bitteren Dood,      
dat anner, dat starv van Hunger so groot,      
dat drüdde, dat worde gehangen.      
Dat veerde bleev up de wilde See dood,      
dat fievde flot achter dem Lande.

Wann se woll up den Karkhoff kwamm,      
se reep Gott, ehren himmlischen Vader, an      
un bedet all mit Fliete,      
dat ehr Gott wolde de Sünde vergeven      
un halen ehr in sien Rieke.

Rough translation:

I didn't send them to school
I never even laughed about them
They couldn't play in the streets
I sent them upon the raging main
to go looking for their dearest father

One of them died a bitter death
Another died of hunger so great
The third died on the gallows high
The fourth died on the raging main
The fifth had to flee the country

And when she came to the churchyard
she cried to the Father up in Heaven
and prayed with all her might
that he would forgive her sins
and take her into His realm

It's probably 15th century, from the Westphalian area (roughly!). More background info for those who have a bit of German can be found here:

https://www.ostfriesischelandschaft.de/fileadmin/user_upload/BILDUNG/Dokumente/Plattdeutsche_Lieder/De_fiev_Soehns.pdf