My aunt’s husband died in 1846 in Germany when their oldest child had not yet turned fifteen. He was survived by my aunt and five children. The family appears to all have immigrated to the United States, but they did not all make the trip at the same time. Based on passenger lists, it appears that the children emigrated with siblings of their mother one or two at a time before the mother immigrated sometime around 1855.
Passenger manifests do not state the relationship between passengers during this time period. Fortunately I knew the family connections before searching for those records and did not overlook those “nearby young passengers” who were actually related to my adult immigrant relatives.
Not everyone migrates as a family at one point in time. Are there young individuals travelling with your immigrant ancestor? Could they be nieces, nephews, younger cousins, or other extended family members?