Notes:
Initially John was left off as a son of Wilhelm, but the 1840 & 1850 census lists that Wilhelm had a son named John who was about the same age as Joshua. His "Henry" number is therefore wrong and the birth order was not changed.
1840 Census, MD, Baltimore Co., 3rd collection district
**William Mummy,
male = 1 [5-10], 2 [10-15], 1 [50-60]
female = 1 [under 5], 1 [5-10], 1 [40-50]
**Henry Mummy (he is listed 4 entries after his brother)
male = 1 [40-50]
1850 Census MD, Baltimore Co., District 2,
*** dwelling 1388 ***
Wm Mumma, 67, farmer, $3000 real estate, b: MD, cannot read or write
Ann " , 55, b: MD
Catharine " , 19, b: MD
John " , 21, farmer, b: MD, cannot read or write
Joshua " , 21, farmer, b: MD, cannot read or write
Nicholas " , 13,
Jane " , 11