KETU in your 3rd House3rd house is affected by Mercury and Mars, both enemies of Ketu. Number 3 would have an important role in the life of the native. If Ketu in 3rd house is benefic then children would be good. The native would be god fearing and a gentleman. If Ketu is in 3rd house and Mars is in 12th then the native has a son before 24th year of age. The son would be good for wealth and longevity of the native. The native with Ketu in 3rd house usually gets a job, which entails long travels.