Dec 4, 1859 was the baptism date and Oct 18, 1859 was the birth date given for Joshua Fowler, son of George and Rachel.
In 1892, says familysearch pilot, George has already married Anna and no kids are listed for them. They are said to have just married in another census. It is possible they were with a friend, perhaps Moses Hampton and not reported by accident. In 1897, Anna E. is returning from Ireland with many children all born in the US. Joshua is 11 and his obituary lists him as the son of George Fowler and Mary Jane Hampton.
A different Joshua Fowler is on the same page in the 1892 census, about the same age, and appears married to Margaret Jane McGaffin per Emerald Ancestors. The family moved away from what I gather. She may be from may be the same Bleary McGaffin families who later go to NY. This should be the son of George and Rachel Joyce Fowler.
James Craig is listed in the pilot site as having Sarah Jane Malcomson as a wife and they had several more children. Rebecca married Adam Richardson as one of her sons has Craig as a middle name.