Dear Tim,
I look this morning to your call to the name Medema.. Your 3rd Great Grandfather is Jochum Jans Medema is baptized on 16 oktober 1773 in Uithermeeden.
Look on Family Search catalog- civil registration - filmnumber 00473 9275 Huwelijkse bijlagen 1812-1833, scans 1082 - 1091..
Huwelijkse bijlagen are papers tot mariage act. of 29 november 1819 actnumber 18
The clark of the county office needed those papers before he is allowd to write the actand before he is allowed to marry the couple.
The first thing he asked young couple two papers of birth, and in your case there are also papers form the death of his first wife.
This first announcement to the marriage is mininum of 14 days.
By no objection he may marry the couple 14 days later.
Now the your last name.
When Napoleon took over the gouverment of Holland in mars 1811., He declared that we should live confirm te French laws.
In Frane everone had already a last name.
In the province Holland 8man from 10 man carried a last name, but the province Groningen only two out of ten carried a last name.
There were many people who had take a last name.
He was born en baptized in the place Uithuizermeeden (mede means greenland good for hay.). So he took in 1811 the last part of the town Uithuizermeden ---->. Medema.
Friendlly greeting from Terkos