I asked Pauline Deshaies your question and this is her thought:
"I wonder if they mixed something up. And the spelling of names is wrong which doesn't help. Edward Lashomb married Mary LaComb.Edward Lacomb married Margaret Arcouet/Arquiette. Could they have Lacomb and Lashomb mixed up?"
I think this might be the case. You might send a note to John Austin who is the keeper of that site and see if he has any ideas.
I must laught if this is the case, as my Mom always thought the LaComb's and the Lashomb's were one family because they were all her "cousins". They truly are two separate families but because of so many Lashomb/LaComb marriages and the resulting cousins with so many duplicate first names it is indeed hard to get them all sorted out.
Perhaps some of the other cousins who descended from Edward LaCombe might have a list of children. You could post it on the Lacombe family forum.