When Sun placed in fourth house of horoscope, person can be inexorable. He/she always suffer from anxiety. He/she may be the expert of secret knowledge. Sun in fourth house can make the person proud and opponent to others. But if Sun is exalted, can provide a luxury vehicle. Inauspicious Sun can give unhappiness in childhood, he/she may have bad Company of friends and child can be daft and cruel.
Note: result of Sun is based on Vedic Astrology and Shastras. The results may change according to twelve different Lagnas.