Once again, I thank you Bob. That's marvellous, and so helpful.
The Alexander Wilhelm unknown word is the same, I think, as in another record :

Edward was Alexander's father Karl's brother, if that's relevant.
Other records of Carl Witt:



The records are in pages of baptisms and marriages in the Latvian Archives- 'Latvian Lutheran Church' records and 'Lutheran Church records Outside Latvia' (ie. Lithuania- Shadow/Seduva), too big to download- and there is no index or link. But your answers make total sense- I could not work out what the + meant.