With their wagon, they had two yokes of oxen, one of cows and an extra cow, they were accompanied by William Buck, who would remain with them much of the way before separating from them to go to California.
They had two yokes of oxen, they were accompanied by William Buck. This was with their wagon. Oxen was one of cows. Oxen was one of an extra cow. William Buck would remain with them much of the way before. William Buck is separating from them. This is to go to California.