Markus Stastny - How many Markus Stastny/Stiasnys were there?

Today I spent several hours trying to answer the following question: Who is the Markus Stastny, supposedly the son of another Markus Stastny, who married Franziska Rusitzka in Radenin in 1853? Call this one MK2. It seemed that MK2 couldn't be the same person as the Markus Stastny, son of Michael Stastny, who married Marie Schiff in Radenin in 1849 (call this one MK1, because he is the one who already had a profile), because (1) MK2's father has a different name (Markus instead of Michael) and (2) MK2 is marked as "ledig," not "verwitwet," in the marriage record.

Against this, consider what would have to be the case for MK1 and MK2 to be two different persons. First, there would have to have been three Markus Stastnys in Radenin at or near the same time: one the grandfather of MK1 (father of Michael), one the father of MK2, and MK2 himself. With the restrictions of the Famliant laws, there was just no way for this to work out; for in order for a Markus Stastny to have passed his surname on to a son named after him, he would have to have been a Familiant; but the only Markus Stastnys in the Familiant record are MK1 and his grandfather.

What is more, MK1 and MK2 seemed to be born at almost exactly the same time, around 1819–1821, allowing for discrepancies between the birth record of MK1 and the age reported in his marriage record(s). So the question was: which is more likely: (a) that another Markus Stastny, not recorded anywhere, of heaven knows what origin, managed to reproduce and pass on his surname and his given name to his son, and did so at exactly the same time as Michael Stastny (his brother?) was begetting a son named Markus, or (b) that the scribe making the record of MK2's marriage erred in recording him as single rather than widowed and wrote down his given name in place of his father's given name? It seemed to me that (b) is highly credible while (a) is utterly fantastic.

What decided the matter for me was the discovery of the death record of MK1's first wife, Marie---or rather, not the discovery of the record, as I had seen it long before but had been unable to figure out who this "Marie Stiasny" might be, but rather the recognition of its significance. It was clear that this was the first wife of MK1, and there was the explanation of the marriage record of MK2, who was of course the same person as MK1.

As for the MK in Tučapy---you may call him MK3 if you wish, but you can see where this is going---it was clear that he was from Radenin, because there was a record of birth of a Marie Stastny in Tucapy whose unwed mother, Franziska Stastny, was (1) the daughter of a "Markus Stastny," and (2) "přilušná do Radenína," or zuständig nach Radenin. It was clear that this was the same Franziska as the so-named daughter of MK1/MK2. Her father was said to be a glazier, matching the death record of Markus Stastny in Tučapy, which identifies him by the same occupation.

So, in sum, there is ample evidence that the MK who married Marie Schiff, the MK who married Franziska Rusitzka, and the MK who married Marie Rosenberg were all the same person. It just requires a long explanation!