Did you look at the replies on here?
http://www.genealogy.com/forum/surnames/topics/lalonde/1289/ The first one gives the marriage info: parents, date and place. Again see if the church records are published or available on-line or film through your local Family History Center and then follow the records back and forth for baptisms and burials. It is all basic genealogy research. If F-C research is new to you I strongly advise you to read some "how to" F-C genealogy books, such as:
1) RESEARCHER’S GUIDE TO AMERICAN GENEALOGY by Val Greenwood, to learn the fundamentals, terminology and basic references common to all researchers. (Even though not French-Canadian this book covers the essentials of research no matter what, where, when or whom. It is sometimes referred to as the genealogist's bible)
2) THE CANADIAN GENEALOGICAL HANDBOOK by Eric Jonasson
3) TRACING YOUR CANADIAN ROOTS by Angus Baxter
4) GENEALOGICAL READER: NORTHEASTERN UNITED STATES AND CANADA, by N.E. Wright
5) TRACING YOUR ANCESTORS IN CANADA by P. Kennedy, J.M. LeBlanc & J. Roy
6) A CANADIAN DIRECTORY FOR GENEALOGISTS, by Louise St. Denis
7) LINKS TO YOUR CANADIAN PAST: v.1-Acadia & the Maritimes; v.2 Quebec; v.3 Ontario & Western Provinces
8) FRENCH-CANADIAN GENEALOGICAL RESEARCH by John DuLong
9) SEARCHING IN FRENCH-CANADIAN RECORDS by Anita & John Coderre
10) FINDING YOUR FRENCH-CANADIAN ANCESTORS by Louise St-Denis
11) BEGINNING FRANCO-AMERICAN GENEALOGY by Rev. Dennis M. Boudreau
12) MILLER'S MANUAL by Douglas Miller
13) SEARCHING THROUGH THE OLD RECORDS OF NEW FRANCE, trans. by Armand H. Demers, Jr.
14) FRENCH & FRENCH-CANADIAN RESEARCH by J. Konrad
15) GENEALOGY: QUESTIONS AND ANSWERS, QUEBEC, VOL. 1, by C.A.S. Lewis, 1978
16) A GUIDE TO QUEBEC VITAL RECORDS, by Patricia Gee
17) FRENCH-CANADIAN SOURCES: A GUIDE FOR GENEALOGISTS by Patricia Keeney Geyh, Joyce Soltis Banachowski, Linda K. Boyea, et al.