List of 3 ancestors found in 30 iterations (3 distinct persons and 3 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Alexandre de Grigny (~0982-1034)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Alphonse de Grigny (~0954-~1017)
3Richilde de Senlis en Artois (~0965-)