They were both in the 109th TAC RCN squadron.
43-12156 was flown by 1st Lt Charles E Stone. He was hit by light flak about 17:20. The plane flew for a brief time then went into a dive and exploded and burned on the ground. Virbil W Kimbrew's eyewitness statement indicated the plane crashed two or three miles east of Villedieux les Poeles at/near St Aubin De Bois. However, a memorial for Stone is located at 48°53'11.0"N 1°30'29.4"W at least 15 miles away from the crash location given in the MACR.
https://www.aerosteles.net/steleen-brehal-stone
It can be seen here:
https://www.google.com/maps/@48.8864...7i13312!8i6656
43-12338 was flown by Robert L Curtis. It is believed he may have been hit by ground fire or light flak as his plane suddenly lost oil pressure. His plane went down about 11:00. He had pulled up to bail out and then the plane nosed over. He was flying with Richard H Cassady. Cassady thinks Curtis may have been caught in the plane as it took a while for him to get out. By then he was too low for the chute to fully open as it was just stringing out as he hit the ground. Cassady states that if he just had another 200 feet or so the chute would have deployed. Curtis ended up about 30 yards from where the plane crashed and burned on the ground. The plane crashed at/near "Miniac", (Miniac-Morvan) according to Cassady's statement in the MACR.
MACRs are here:
https://www.fold3.com/image/28618638 and here:
https://www.fold3.com/image/28618162