Frederick Moser was the 2nd great-grandfather of Florence Mosier and one of nine children of John Philip Moser and Catherine (surname unknown). It is known that his father migrated as a child from Pennsylvania to Orange County, North Carolina, and it is likely that Frederick was born near Stinking Quarter Creek in Orange County (now Alamance County), North Carolina. Although his year of birth is not yet known, it is estimated that he was born about 1786.

Sometime around 1806, the Philip Moser family migrated to the Indiana Territory where Frederick married Elizabeth Smith in Harrison County on November 30, 1815. Nothing is known about Elizabeth's parents, but information gathered from the 1850 and 1870 U.S. Census records for Floyd County, Indiana indicates that she was born between 1796 and 1800 in North Carolina. Frederick and Elizabeth had four children: a daughter born between 1815 and 1818; John, born about 1818; Christian, born in 1820; and David, born in 1824.

Indiana became a state on December 11, 1816, and in February 1819, Floyd County was formed from portions of Harrison County and Clark County. At the first meeting of the county commissioners on February 8, 1819, the county was divided into three townships: New Albany, Greenville, and Franklin (which would later be subdivided in 1826 to create Georgetown Township). History of the Ohio Falls Counties [1882] reports the following in its discussion of Franklin Township:

On October 16, 1819, Frederick Moser received the patent for 171.22 acres of land in Section 17, Township 2, Range 5 East in Floyd County, Indiana.

Frederick died around November 3, 1827. His death may have been sudden. He was a relatively young man, about 40 years old, and he apparently died without leaving a will. The following records documenting the inventory and sale of his personal estate were found in the will and probate books of Floyd County: [spelling and punctuation are as found in the records]

The personal goods of Frederick Moser sold for $62.811/2 under the appraised value of $266.521/2 (excluding the portion retained by his widow). Included among those who purchased items from the estate were Frederick's brother and sister-in-law, John and Elizabeth Moser, Elizabeth's father, George Kepley, and her brother, Andrew Kepley. Also included on the list of purchasers was John Fox, who would marry Frederick's widow a few months later. Frederick's brother-in-law, Jacob Burkhart, was one of the appraisers of the estate.

Elizabeth Smith Moser, widow of Frederick Moser, married John Fox on March 25, 1828 in Floyd County, Indiana. They apparently had three sons together. John Fox died before the 1840 Census was taken, because Elizabeth is listed as head of a household that includes one male under 5 years old, two males 5-10 years old, and one male 15-20 years old. The three youngest children were born after Elizabeth's marriage to John Fox. It is probable that the youngest of the three was Andrew Fox, with whom Elizabeth was residing when the 1870 Census was taken for Floyd County.

On March 26, 1848, Elizabeth married Peter Miley. She was apparently widowed for a third time shortly after marrying, because the 1850 Census for Floyd County includes her in the household of David Mosier. No record of Elizabeth can be found in the 1880 Census, leading us to conclude that she died between 1870 and 1880.