As mentioned above, it is impossible that Nobushige said 'Yukimura' instead of 'Nobushige' because the Yukimura name was created later, so it seems to be a dramatization of later generations.
既に触れたように幸村は後の時代に創られた名前のため信之が“信繁”ではなく“幸村”と言う訳もなく、後世の脚色であると思われる。