I have found a little information...
Charlotte Martin was born 15 December 1832 in Lake Superior Area. She was the daughter of Solomon Martin and Lisette Dupere. They were married on 25 November 1854 in Ste-Anne, Mackinac Island, Michigan. I found children:
Joseph M. Rousseau born abt. 1867, Charlotte Rousseau born abt. 1868, Charles Rousseau born abt 1871 and John Jonas Rousseau born 17 May 1875 in Beaver Island, Charlevoix, Michigan and died 25 January 1950 in Duluth, St-Louis Minnesota, USA. He married Susan Morisson on 21 June 1917 in Grand Marais, Cook, Minnesota, USA
You will find this info and more on:
http://trees.ancestry.com/tree/27452406/person/2064967641Charlotte Martin in household of Solomon Martin, "United States Census, 1850"
name: Charlotte Martin
event: Census
event date: 1850
event place: Michilimackinac county, Michilimackinac, Michigan, United States
gender: Female
age: 18
marital status:
race (original):
race (standardized):
birthplace: Wisconsin
estimated birth year: 1832
dwelling house number: 238
family number: 241
line number: 38
nara publication number: M432
nara roll number: 357
film number: 443573
digital folder number: 004200032
image number: 00429
Household
Solomon Martin
Gender: Male
Age: 53
Birthplace: Canada
Charlotte Martin
Gender: F
Age: 18
Birthplace: Wisconsin
Mary Martin
Gender: F
Age: 15
Birthplace: Michigan
Susan Martin
Gender: F
Age: 13
Birthplace: Michigan
Michael Martin
Gender: M
Age: 11
Birthplace: Michigan
Charles Rousseau in household of Charles Rousseau, "United States Census, 1870"
name: Charles Rousseau
estimated birth year: 1830
gender: Male
age in 1870: 40y
color (white, black, mulatto, chinese, indian): White
birthplace: Canada
home in 1870: Michigan, United States
Household: Charles Rousseau
Gender: M
Age:40y
Birthplace: Canada
Charlotte Rousseau
Gender: F
Age: 36y
Birthplace: Michigan
Joseph M Rousseau
Gender: M
Age: 3y
Birthplace: Michigan
Charlotte J Rousseau
Gender: F
Age: 2y
Birthplace: Michigan