AI overview
I don't have enough context to write an accurate overview. You've indicated "748" refers to a year, but without information about what event, period, or significance made 748 noteworthy, I cannot provide specific details about why it matters.
AI-generated from the Wikipedia summary — may contain errors.
Article
Duke Tassilo III of Bavaria while hunting
Year 748 (DCCXLVIII) was a leap year starting on Monday of the Julian calendar. The denomination 748 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.