<prompt> Ramba uchinyora ndima ino - William ndiye aiva mwanakomana mukuru waDuke Henry the Mild wekuBrunswick kubva kumuchato wake wokutanga naSophia, mwanasikana waGriffin Duke Wartislaw IV wePomerania. Pakafa baba vake muna 1416, akagara nhaka yeBrunswick Principality yeLüneburg iyo yaakatonga pamwe chete nemunununa wake wehafu-mukoma Henry Runyararo. William akazova mutongi ane simba; akakurumidza kupinda mumakakatanwa mazhinji nemachinda akavakidzana akadai saMubhishopi Mukuru weBremen uye Bhishopi weHildesheim, uye akatsigira maCounts eSchauenburg neHolstein mukurwisana kwavo naMambo Eric weDenmark. Akarwisanawo naMarkgrave Frederick weMeissen vachikunda vaHussite  <response>: mauto muna 1421 muhondo yeBrux. 