Sun in the 4th/11th from Moon can bring gains to the father from in-laws. The nature of the gain depends on Moon, Venus, and Jupiter's positions relative to the Sun.
Sun-Venus-Mercury in Aries in the 8th house indicates an educated, well-known father.
Saturn in the 2nd from Sun suggests early struggles for the father, followed by success.
Mars-Ketu in Pisces in the 7th house suggests many siblings for the father, but potential health issues.
Sun-Rahu conjunction/relationship highlights the role of grandparents in the native's life.