gave a pretty good effort at looking for this family on the 1850 US Census, but didn't find them. Maybe they were just arriving in the US around this time.
The oldest son gives an arrival year of 1847 when asked by the census taker in 1900.
The middle son is not alive to ask in 1900, but the youngest son gives an arrival year of 1852. In other words, they both say they were 7 years old at the time of arrival. Of course, this is not impossible. The oldest may have come with his dad earlier, and the wife and babies a few years later. This would help explain why there are only three children in this family - could have been some years of separation while the father was establishing a life in the new country and then sent for the rest of the family.....NOTE THAT THIS IS ALL SPECULATION FOR THE PURPOSE OF GENERATING RESEARCH AVENUES