Hi
You can also go to
www.genealogia.fi select HisKi - Church Records then
the link Search program for history books
now you can chose the right parish, in your case Alatornio.
I made a search in the book of christened with fathers last name vanhakartano. 38 hits.
Among them a person named David married with Lovisa Johansdotter.
One problem for you with the person you are searching is that the books online stops around 1850.
Any questions? Ask and i try to answer. I live probably closer to Alatornio (31 miles)...
When i have my way to Alatornio i look up Vanhakartano in the books for you.
ps.
In Finland they often want money for the info...not so fun...I live in Sweden and here the information is free (at least for genealogy purpose)... :0)
ds.
Greetings Mika S