I can't seem to link into these census listings for Wisconsin Bohans, but I will list for those who might.

1860 Wisconsin Milwaukee 3rd Ward pg 57 of 129
Ellen Bohan age 19 head of house born Ireland
Mary Ann Bohan age 3 born Illinois
Catherine age 1 born Wisconsin
Maurice Sullivan age 10 born NY

1850 Wisconsin Dodge County, Clyman pg 8 of 18
James Bohan age 40 head of house born Ireland
Mary Bohan age 36 born Ireland
Eliza age 12
Jeremiah age 9
James age 7
Andrew age 5
Ellen age 3

this same family is present in the 1860 census without the eldest daughter and without the father:

1860 Wisconsin Dodge County, Clyman pg 21 of 37
Mary Behan (spelling in the census) age 46 head of house
Jeremiah age 19
James age 17
Andrew age 15
Ellen age 13
William age 9

1860 Wisconsin Milwaukee 4th ward, District 20, pg 365 of 749
James Bohan age 30 head of house
James age 4

no other family listed.

Wish these were mine. : (
Sarah Broadbent