There is confusion in the census records as to where David was born and those listed for him by his children. In many cases, PA is listed, but it was Maryland from baptismal records. The oldest children could not read nor write.
1800 Census, MD, Allegany Co., Cumberland Town
Conrad Muma <===David's brother
males < 10 = 3
males 18-26 = 1
males 26-45 = 1
females < 10 = 2
females 10-16 = 1
females 26-45 = 1
David Muma
male 18-26 = 1
1820 Census MD, Allegany Co., Cumberland
David Mumaw,
males <10 = 2
males 10-16 = 1
males 26-45 = 1
females <10 = 2
females 10-16 = 1
females 26-45 = 1
Note: His widowed neice, Catherine, is living next door, widow of Jacob
Catherine Mumaw
males <10 = 1
females 10-16 = 1
females 26-45 = 1
1830 Census MD, Allegany Co.,
David Muma
males 5-10 = 1
males 10-15 = 1
males 15-20 = 1
males 40-50 = 1
females 10-15 = 1
females 15-20 = 1
females 30-40 = 1
1840 census of Brown Twp., Knox County of Ohio. household of David Moomaugh
Males
5-10 = 1
20-30 = 1
60-70 = 1 {David is 62}
Females
20-30 = 2
30-40 = 1
50-60 = 1 {Betsy is 56}
1850 census of Brown Twp., Knox Co. OH p. 439
David Mewmaw age 82 b. PA (David's age appears to be off by 10 years and wrong state)
Elizabeth Mewmaw age 61 b. PA
David age 14, OH <===???
1850 Census, OH, Knox Co., Brown Twp., p. 439 12 Oct 1850 (Living next door is his son]
David Mewmaw, 30, laborer, b. PA, married within the year, cannot read or write (age and birth date are wrong]
Levina " , 19, married within the year.
David is buried in Jelloway Methodist Episcopal Cemetery
https://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=42206073