Andrew III of Hungary lives slightly longer (and Wenceslauses II and III live a LOT longer), and the betrothal of Wenceslaus III of Bohemia and Elizabeth of Töss is actually followed through.
Wenceslaus III of Bohemia/II of Poland/I of Hungary (b.1289; d.1340) m. Elizabeth of Hungary (b.1289; d.1338)
1) Andrew IV of Hungary/I of Bohemia and Poland (b.1309; d.1354) m. Amalia of Poland[1] (b.1304; d.1367)
1) Ladislaus V of Hungary/IV of Bohemia/II of Poland (b.1324; d.1363) m. Anna of Bavaria[2] (b.1323; d.1376)
1) Andrew (b.1342; d.1351)
2) Stephen VII of Hungary/I of Poland and Bohemia (b.1343)
3) Elizabeth of Bohemia (b.1345)
4) Anna (b.1347; d.1348)
5) Lucia of Hungary (b.1349)
6) Wenceslaus (b.1351; d.1351)
2) Andrew (b.1325; d.1339)
3) Casimir of Poland (b.1326; d.1358) m. Catherine of Masovia[3] (b.1329; d.1355)
1) Mary (b.1345; d.1345)
2) Ottokar (b.1346; d.1347)
3) stillborn son 1347
4) Margaret (b.1348; d.1348)
5) stillborn daughter 1349
6) Rastislav (b.1350; d.1353)
2) Michael of Hungary (b.1311; d.1349) m. Constance of Naples[4] (b.1305; d.1345)
1) stillborn son 1326
2) Margaret of Hungary (b.1327; d.1349) m. Gregory II Kőszegi[5] (b.1328; d.1390)
1) Nicholas (b.1344; d.1345)
2) Andrew (b.1345; d.1348)
3) Ivan II Kőszegi (b.1347; d.1383)
4) stillborn son 1349
3) Stephen (b.1329; d.1329)
4) stillborn daughter 1331
5) Elizabeth (b.1332; d.1333)
6) Wenceslaus (b.1334; d.1335)
7) stillborn daughter 1335
3) Mary of Bohemia (b.1313; d.1347) m. Dmytro of Galicia[6] (b.1311; d.1341)
1) Lev (b.1329; d.1329)
2) Maria (b.1330; d.1331)
3) Vladimir (b.1332; d.1332)
4) Mikhail, King of Galicia-Volhynia (b.1335; d.1383)
5) stillborn son 1336
6) Yaroslava (b.1338; d.1375)
4) Hedwig of Hungary (b.1315; d.1351) m. Jaroslaw of Legnica[7] (b.1319; d.1364)
1) Barbara (b.1335; d.1335)
2) Agnes (b.1336; d.1336)
3) Boleslaw IV, Duke of Legnica (b.1338; d.1378)
4) Rastislaw (b.1339; d.1341)
5) Margaret (b.1341; d.1344)
6) stillborn son 1342
7) Henry (b.1347; d.1357)
5) Anna of Croatia (b.1317; d.1339) m. Mladen III Šubić of Bribir[8] (b.1302; d.1350)
1) Juraj (b.1332; d.1332)
2) stillborn daughter 1334
3) Nikola Šubić, Ban of Croatia (b.1335; d.1381)
4) Jelena (b.1337; d.1359)
5) stillborn son 1339
6)
Ladislaus (b.1319; d.1321)
7)
stillborn son 1321
[1] ATL daughter of Wladyslaw the Elbow-High
[2] ATL granddaughter of Otto III, Duke of Bavaria, and great-great-granddaughter of Béla IV of Hungary
[3] ATL daughter of Trojden I, Duke of Masovia
[4] ATL daughter of Robert, King of Naples, and great-granddaughter of Stephen V of Hungary
[5] ATL son of John Kőszegi
[6] ATL son of Andrew of Galicia
[7] ATL son of Boleslaw III the Generous
[8] ATL son of Mladen II Šubić of Bribir
- Andrew III makes it through 1301 without dying. His wife gives birth to a son -- named Stephen -- in 1305. Feeling more secure with an heir, Andrew allows the betrothal between his daughter and Wenceslaus Jr to go through. The two are married the following year.
- Andrew's luck ends 1308, when he dies suddenly in a riding accident. His infant son is crowned Stephen VI.
- With the prospect of an easily controlled child king, Charles Robert of Anjou -- who has been skulking about Croatia since 1300 -- starts rapidly hemorrhaging supporters.
- Elizabeth gives birth to her firstborn son in late 1309, named Andrew after his late grandfather.
- Mere months later, Stephen VI dies from an illness, only weeks after his 4th birthday.
- Wenceslaus Jr. and Elizabeth claim the throne of Hungary, Charles Robert disputes their claim, the ensuing succession war is abruptly cut short when Charles Robert is killed in battle in the summer of 1311. After weeks of armwrestling over whether the Holy Crown should go to Wenceslaus, Elizabeth, or even baby Andrew, Wenceslaus Jr. is finally crowned King of Hungary.
- Pleased with the outcome, Wenceslaus Sr. turns his attention back to Poland, where he keeps his lucky streak going by capturing and executing Wladyslaw the Elbow-high in 1313, taking both of his daughters to his custody. The younger, Amalia, is promptly betrothed to young Andrew. The elder daughter, Kunigunde, is eventually carted off into a convent.
- In 1321, Wenceslaus II of Bohemia finally dies at the age of 50, having secured both Poland and Hungary for his son.
- By the 1340s, the Přemyslids have come to the conclusion that ruling an empire stretching from the Baltic to the Adriatic is more trouble than it's worth. The Poles are persnickety, the Hungarians are cantankerous, and if the kings try placating them with a softer hand the Bohemians get grumpy. They can't focus on HRE affairs because they're constantly focusing on either keeping their nobles in line or propping up Galicia-Volhynia as a buffer against the Golden Horde. They'd love to split their realms, but the younger sons keep. Not. Having. Living. HEIRS!!! Both Andrew IV and Ladislaus V famously went prematurely gray.