Complex sentence: In June 1823, the "Gojo" family gave him a "yokozuna" licence, but he rejected this because he was afraid that he would make problem against the "Yoshida" family.
Split into simpler sentences: In June 1823, the "Gojo" family gave him a "yokozuna" licence, but he rejected this. The reason has been said to be that he was afraid that he would make problem against the "Yoshida" family.