WI: Maria of Nassau Has a Son by her Pfalz Husband?

As the title says. @JonasResende had a thread on Eduard, Count Palatine having a son and heir; and @Valena has done a TL where Rupert marries Frances Bard. But I haven't seen any on Maria of Nassau and her Pfalz-Simmern-Kaiserslautern hubby.

Maria married Ludwig Heinrich of Kaiserslautern in 1666 (after she had been offered to all three sons of Charles I apparently). He died 8 years later with no kids. I'm guessing -considering how her sisters sprogged - that the problem was on his end (I would say consanguinity might have also played a role, but considering he and the Great Elector would have had more or less the same ancestors, I don't know if this is a valid argument). Ludwig Heinrich (or his son) would've stood higher in the Pfalz succession than the Neuburg bunch. So the Palatinate would - theoretically - not change religion TTL. But how else would this affect things?

Well, no War of the Palatine Succession (at least, not in OTL's format). However, that doesn't mean that the French won't find some other pretext to snap up bits and pieces. No French invasion/Neuburg inheritance means no relocating of the Palatine capital from Heidelberg to Mannheim. The Neuburgs here serve as little more than Austrian proxies, which probably means no match between Anna Maria Luisa de Medici and Johann Wilhelm (OTL Cosimo III allowed the match because JW was able to get Cosimo accorded a higher rank by the emperor than what he held previously). Johann Wilhelm would be regarded as too low a match - imperial brother-in-law or no (I'm basing this on the failure of an earlier Medici-Neuburg marriage (proposed between Anna de Medici and Philipp Wilhelm, JW's dad) where the Medici wanted Philipp Wilhelm's dad to abdicate so that he could be of an appropriate rank to marry Anna). It would be funny if Anna Maria Luisa were to wind up as duchess of Savoy, and Anne Marie d'Orléans shifted to repair the "broken" Palatine match, but while London (and perhaps her stepmother) might be urging it (likewise to maintain a link to the Palatinate - Anne Marie being the niece of Charles/James II as well as Louis XIV, after all), whether Louis sees the point in it is up in the air.

Johann Wilhelm will wind up having to remarry elsewhere (assuming that the Medici/Orléans betrothals are switched), Wilhelmine Amalie of Brunswick (OTL wife of Emperor Josef I could make for an interesting match), and provided he doesn't give her syphilis (as he did to his Medici wife), the effects of him having a son (and thus the Neuburg line continuing) could be interesting to see.
Depending on when Friedrich Ludwig marries, I could see the Great Elector offering the widowed Ludwika Radziwillowna as a proxy princess to the Palatine elector. While he may want her to marry his eldest son from his second marriage, Philipp Wilhelm, if he dies before this takes place, OTL Friedrich I had no love for his half-siblings, so would probably send La Radziwillowna off to Heidelberg without a second thought. Her OTL second husband is certainly not going to be considered a candidate, being a mere count palatine of Neuburg (being an imperial brother-in-law may count for something but not much) TTL.
 
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