In the 1840 US Federal Census for Mountain, Crawford, Arkansas, Richard McCaslin has in his household two males under 5 years (William and Robert), one male between 30 and 40 (himself), one female under 5 years, and one female between 20 and 30 (his wife Mahalia). Richard is living near his brother David as they are recorded on the same census page. In the 1850 US Federal Census for LaFayette, Crawford, Arkansas, 49-year-old Kentucky-born farmer Richard McCaslin has no real estate of value. He and his 37-year-old Kentucky-born wife Matilda [sic] have in their household their Arkansas-born children 13-year-old William, 11-year-old Robert, 9-year-old Mary, 7-year-old Spicy [transcribed as Nancy], 4-year-old Elizabeth, and 2-year-old Richard. Also living in this household is David Harrow, a 27-year-old Arkansas-born blacksmith. In the 1880 US Federal Census for Upper, Crawford, Arkansas, 65-year-old Missouri-born Matilda [maiden name unknown] McCaslin is recorded as "mother" and "at home". Living with her are 25-year-old Arkansas-born Zac and his wife 28-year-old Missouri-born Harriet [maiden name unknown, possibly McCaslin] McKinsey [?]. Zac is a farmer and Harriet is keeping house. Matilda and Zac are illiterate. Matilda's parents were born in Missouri [sic], Zac's parents in Arkansas, and Harriet's father in Ohio and her mother in Kentucky.