I'm sorry, but there is no specific horoscope information available for the first name "demen". Horoscopes are usually based on the birth date of an individual rather than their first name. However, I can provide you with some general information about the significance of names in astrology.

In astrology, the first name of an individual can have an influence on their personality traits and characteristics. The vibration and energy associated with a name can impact how someone presents themselves to the world and how they interact with others. Each letter in a name is assigned a numerical value in numerology, which can provide insights into a person's strengths, weaknesses, and potential challenges.

If you are interested in exploring the astrology of a specific individual, I recommend looking at their birth chart, which is a map of the positions of the planets at the time of their birth. This will provide a more detailed analysis of their personality, strengths, weaknesses, and potential life path. Feel free to provide a birth date and time for a more in-depth horoscope analysis.