By 1148 Manuel had seen the wisdom of securing an alliance with Conrad, whose sister-in-law Bertha of Sulzbach he had earlier married; he actually persuaded the German king to renew their alliance against Roger II of Sicily.
I 1148 havde Manuel indset fornuften i at sikre sig en alliance med Konrad, hvis svigerinde Bertha af Sulzbach han tidligere havde giftet sig med. Han overtalte faktisk den tyske konge til at forny deres alliance mod Roger 2. af Sicilien.