1976: Sister Geraldine MacNamara and a group of neighbourhood kids found Rossbrook House as a positive alternative for neighbourhood children and young people.
1977: Eagles' Circle alternative educational program begins.
1979: The Sisters of Sion move on to Elgin Avenue, marking the beginning of the Order's long association and support of Rossbrook House.
1979: Sister MacNamara leads a crusade against the construction of the Sherbrook-McGregor Overpass, which would have destroyed the neighbourhood in which the Rossbrook community lives. By 1981, the Overpass proposal was dead.
1980: Elgin House opens as a residence for young men.
1981: Wi Wabigooni opens for elementary students.
1982: Meegwetch House opens, providing a place for teenage girls to live in comfort and safety.
1982: Rising Sun High School begins under the administration of R.B.Russell School.
1983: Sister MacNamara is invested into the Order of Canada.
1984: Sister MacNamara dies, and the Sister Geraldine MacNamara Memorial Fund is created.
1985: City of Winnipeg opens "Sister MacNamara Park".
1986: University of Winnipeg launches "MacNamara Hall".
1988: Anishnaabe Oway-ishi was implemented as a pre-training and employment program.
1991: Grand re-opening of Elgin House as a multi-purpose building.
1995: Coalition of Community-Based Youth-Serving Agencies created.
1997: Sister MacNamara inducted in the Winnipeg Citizens' Hall of Fame.
1999: A 3,000-square-foot expansion is added to the original Rossbrook structure.
2001: G.E.M.: The Life and Work of Sister Mac, by Ellie Stebner, was published.
2002: Rossbrook House establishes an internet presence with the opening of its web site at www.RossbrookHouse.ca.