Notes:
This may be Samuel Mumma, son of David Mumma (1751), who married Mary Delsher in 1811. Also, I am confident that their first child was John Mumma, a male and not female as listed in the baptismal records - many such records were recorded after the event and minor errors occur, especially if several children were baptised on the same day.
Not listed in the 1850 census nor the 1840 census since Mary is living by herself with the children.
Obituary - "Died on the 31st nit., Samuel Mumma, victualler, in the 43d year of his age." Baltimore Sun, August 4, 1837.
1830 Census - MD, Baltimore Co., 4th Ward, p. 212
Family of Samuel Mumma
Males 5-10 = 1 <== Jacob J. Mumma ?
Males 10-15 = 1 <== David Mumma ?
Males 15-20 = 2 <== William Mumma ? & John Mumma
Males 10-50 = 1 <== Samuel Mumma
Females under 5 = 2 <== Mary E. Mumma & Amanda Mumma
Females 5-10 = 1 <== Sarah Ann Mumma
Females 10-15 = 1 <== ??
Females 20-30 = 1 <== Johanna Mumma
Females 30-40 = 1 <== Mary Delsher Mumma
Since Laura was born in 1833 per the census, she wouldn't be listed in the 1830 census.
Doing a count, I have 1 too many males listed and need to add two females. Since most of his children cannot read or write, I would probably eliminate Richard Mumma as the extra male since he appears to be literate.
Matchett's Baltimore Directory for 1835 - Volume 493, Page 209
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Mumma Samuel, victualler, York avenue
Vict"ual*er\, n. [F. victuailleur.] [Written also victualler.]
1. One who furnishes victuals.
2. One who keeps a house of entertainment; a tavern keeper; an innkeeper. --Shak.
3. A vessel employed to carry provisions, usually for military or naval use; a provision use; a provision ship.
Matchett's Baltimore Directory for 1837 - Volume 489, Page 238
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Mumma Samuel, butcher, York avenue
Mumma John, butcher, York avenue
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1850 census MD, Baltimore Co., 8th Ward of Baltimore, 15 Aug 1850
Mary Mumma, 55, b. MD, cannot read or write
Sarah Mumma, 23, b. MD, cannot read or write
Amanda Mumma, 21, b. MD, cannot read or write <== Already have an Amanda living with sister Mary E. Maxfield ??
Laura Mumma, 17, b. MD
Elizabeth Delsher, 53, b. MD <=== Sister of Mary???
Stewart Burk, 8, b. MD
William Mumma, 3, b. MD - Son of Mary's son, William. He is not with his mother for some reason.