Mathias Aberle had a brother, Frederick, born 24 Apr 1822. In the 1850 US Census for Baltimore, Maryland (Ward 16, page 258), there is a Frederick Aberly listed (age 28, occupation tailor). The interesting thing about this is that living in the same household is a Charles Grill. This might be the same person as Charles Grell who witnessed Mathias Aberle’s naturalization on 22 Sep 1856. This would tie the Mathias Aberle born in Witterhausen with the one naturalized in Baltimore.